It will not nip at or quarrel with any other species. Generally, this fish is for a small tank, and it can adapt itself perfectly in small tanks. If infusoria are unavailable, commercially prepared foods for an egglayer may also be used. Rasboras are a true freshwater family of fish and are never seen in brackish waters. Harlequin rasboras need at least a 10 gallon aquarium. The fry will be nearly completely clear and feed on a yolk sac for the next 24 hours. This is the same for other fish too, like neon tetras. Shirlie is a fish and aquarium lover with 16 years of experience writing on the topic of raising and keeping fish at home. At 10cm/ 4” in total length and, with a habit of displaying between males, this rasbora does much better in a tank of at least 120cm/4’ in length. They stay small, bring color to the tank and are very peaceful fish. It is however best kept in pH 6-7.8 and the water should be soft to medium hard (max 15°dH). A poor diet can affect development.eval(ez_write_tag([[468,60],'fishkeepingworld_com-large-mobile-banner-2','ezslot_5',123,'0','0'])); These fish are peaceful tank mates, so they do well in most tanks. Harlequin Rasboras are a great example of an easy shoaling fish to add to your tank. When spawning is complete, remove the breeding stock from the aquarium, as they will consume the fry once they hatch. The distinguishing triangular patch begins near the dorsal fin and comes to a point near the base of the caudal fin. The right ph level for water is 6 to 7.7 and the hardness should be 2 to 15 KH. Decorate your harlequin rasbora tank with live aquarium plants, large rocks and pieces of driftwood to mimic the natural habitat of these fishes. If harlequin rasboras appeal to you, and you are interested in some compatible fish for your aquarium, read up on: Check out additional fish breed profiles for more information on other freshwater fish. For the first 5 weeks I had them they stayed in the top third of the tank and now I noticed one started swimming down to the bottom half of the tank and they other 4 seemed to follow him and today most of the day they have been hanging exactly in the middle of the tank … This depends on lots of factors such as the conditions of the tank, stress levels of the fish and the population they were bred from.eval(ez_write_tag([[580,400],'fishkeepingworld_com-large-leaderboard-2','ezslot_8',135,'0','0'])); While these designs aren’t striking on their own, a group can create quite a spectacle. To encourage spawning, you need to put them in a separate dimly-lit tank of soft water whose temperature should be 80° F (26° C), pH level at 5.3-6, and general hardness within 1.5-2.5 dGH. This species looks similar to Rasbora espei and R. hengeli. Therefore, they can thrive in most substrates such as rocky, gravel, plant. On the face of it, the Harlequin rasbora can … The harlequin rasbora is a shoaling fish; it should be kept in schools of eight to 10 individuals. Male harlequins are more slender than females and exhibit a rounded extension at the bottom edge of the distinctive black wedge covering the posterior of the fish. I have a sick Harlequin Rasbora. The Black Harlequin Rasbora will occupy the upper region of your freshwater aquarium, adding lively movement and exciting color for a marvelous display. Save my name, email, and website in this browser for the next time I comment. We’re thrilled to have you as part of our community. You won’t struggle to find harlequins; they’re usually in high demand so most aquarium stores will stock them. In contrast, the patch on the female Harlequin Rasb… Harlequin Rasbora swimming strange. The species became a favourite among hobbyists after its introduction in the early 1900s. The larger the tank, the more you can get, and the more impressive a shoal’s display will be. This black patch is what gives this fish it’s name, being similar to the black patterns found on a classic harlequin outfit. The pH of the water should be slightly acidic, in the range of 6.0 to 6.5. The Harlequin Rasbora is easily identified by its characteristic black \"pork chop\" shaped patch and beautifully lustrous copper/orange body. Offer valid 12/28/2020-3/1/2021 with Treats membership online only at petsmart.com. Do I need more males to females? They can be looked after by people of experience levels. Over the last week I've noticed that he appears to have trouble swimming.. balance seems ok, but it looks like swimming is an effort & he's 'pushing' himself forward, rather than swimming gracefully. I have had mine for almost two weeks and two days after I got them they began trying to spawn. It inhabits streams and waters that are characterized principally by their low mineral content and high concentrations of dissolved humic acids, which is typical of water that flows through swamped forests. Due to their non-fussy nature, they are very easy to feed and once settled into their aquarium shouldn’t offer too many [Continue reading …], There are many peaceful tropical fish available for a community aquarium. You’ll need some broad-leaved plants (such as Anubias Nana) in your tank because once ready to spawn, the female rubs her belly on the underside of a leaf to signal the male. Small peaceful fish are ideal. Most of the time you … This is easier on their digestive system, than giving it to them all in one go. The most common diseases affecting them are issues for many other aquarium fish too. Here they inhabit rivers, streams and swamp forests which resemble the blackwater habitats of South America.eval(ez_write_tag([[300,250],'fishkeepingworld_com-medrectangle-4','ezslot_4',109,'0','0'])); These small shoaling fish are easy to care for, so you shouldn’t have many problems. Clown Loaches and Bettas are a couple of species that may harass others. This does mean you can feed them green vegetables though, or even use these to make your own homemade fish foods. These include dropsy (fluid buildup causing swelling), Ich (White spots over the body), and fin rot. 8. They’re easy to care for, and as long as they’re fed a simple diet, and their tank is kept clean, they’ll thrive. Often referred to as a red rasbora, the body is a reddish-copper color that is accented by a striking black wedge covering the rear half of the body. The waterlogged soils of these forests inhibit the complete decay of leaf litter, resulting in the formation of peat, which leaches humic acids. Young harlequin rasboras then reach sexual maturity in approximately six to nine months. Hobbyists who are intent upon simulating natural conditions as closely as possible may choose to filter the aquarium water over peat, thus replicating the humic acid concentrations found in the fish's native waters, although this is not necessary if the basic water chemistry parameters (no higher than 4 dGH of hardness, pH around 6.4) are correctly maintained. Six to 12 eggs are laid at a time. But one of them looks damaged. What might have caused this? Sometimes overlooked among the considerations is at what water level the fish prefer to swim and school. They do this every two days. Optimum water temperatures for spawning are between 76 and 80 degrees Fahrenheit. They tolerate a wide range of conditions, are peaceful community fish, and eat various foods. I’m planning on using real plants and will have an algae eater (tbd as I’m still researching). Spawning will usually begin in the morning and is initiated by the male dancing and trembling before the female. The life expectancy of a Harlequin Rasbora is around 6 years but they can live up to 8 years in the right conditions. This spawning behavior is intended to direct the female beneath a suitable plant for depositing the eggs. The waters in these areas are tropical so temperatures will be fairly warm and the pH will be near neutral (these fish won’t survive in extreme acidity or alkalinity).eval(ez_write_tag([[250,250],'fishkeepingworld_com-leader-1','ezslot_13',114,'0','0'])); Swamp forests will have waterlogged soil substrates, whereas rivers are more sandy. Cherry Barbs, Corydoras Catfish, Danios, Dwarf Gourami, Guppies, Hatchetfish, Mollies, Platies, Tetras and Zebra loaches are just a few good options. Neon Blue Dwarf Gourami (Colisa lalia) You can keep harlequins together; in fact you should keep them in groups of at least four. You just need to add a heater.eval(ez_write_tag([[336,280],'fishkeepingworld_com-netboard-1','ezslot_18',158,'0','0'])); Set your heater between 72-81°F. The easiest way to cater for their needs in an aquarium is through store-bought foods. Another factor that raises the likelihood of disease is poor nutrition. As peaceful, social fish, the Black Harlequin Rasbora does best in a school of around six or more and enjoys lots of open areas for swimming. Since they’re small you can comfortably fit quite a few in one tank. Get it free when you sign up for the Spruce Pets! The Harlequin rasbora is a small, peaceful and playful fish. If you’re looking to breed them then they will need much more attention. Thanks, Robert. Their omnivorous diet means they are opportunistic; they eat whatever comes their way. Some of the more difficult to breed rasboras, such as the harlequin rasbora, will need reverse osmosis water to obtain the required softness needed to breed them. Live foods in particular make feeding times interesting by introducing movement. It doesn’t have any problem swimming or getting food, but it is weird looking! Some of the species have light sensitive eggs that will die if exposed to much light. For breeding, harlequin rasboras require very soft water; hence the degree of hardness should be within 1dH and 3dH. A dirty tank is one of the leading causes of disease outbreaks.eval(ez_write_tag([[300,250],'fishkeepingworld_com-portrait-2','ezslot_24',121,'0','0'])); Therefore, cleaning your tank is a simple preventative measure to make sure you don’t lose your fish. They are a striking fish which, when added as part of a group, will add a vibrant splash of color to your tank.eval(ez_write_tag([[468,60],'fishkeepingworld_com-medrectangle-3','ezslot_6',152,'0','0'])); This captivating small fish has very few specific care needs and they aren’t very demanding. The female harlequin rasbora is also larger than the male. The average lifespan of the Harlequin Rasbora is between 5 and 8 years. Create open areas for swimming between stands of plants such as Cryptocoryne species, these being among the plants that inhabit the harlequin rasbora's native waters. It is an active fish that is entertaining to watch and will provide countless hours of fun. Harlequin Rasbora are hardy freshwater fish that make for excellent starter fish. Is the Harlequin Rasbora Suitable for Your Aquarium? Thanks, Robert. If you keep them healthy, they can live for 5-8 years.eval(ez_write_tag([[336,280],'fishkeepingworld_com-leader-4','ezslot_10',137,'0','0'])); Unfortunately they are one of the harder species to breed in an aquarium, but it is possible. They do best when placed in a tank as a small school, over six fish. Harlequins bred for aquariums are grown in environments based on their river habitats, so this is the habitat you need to recreate in your tank. Level of care: easy. A slightly warmer temperature (around 80°F) will help to encourage spawning. Add beautiful yet pretty Harlequin rasbora inside the aquarium. The male will come to fertilize the eggs. The species has much more … Separate the parents from the fry as they will try to eat them. You can keep 3 or 4 Guppies, or 2 – 3 Rasboras in a 10 gallon, depending on which species you’d like. When spawned in groups, keep two males for every female. Fish hobbyists love the harlequin rasbora—it has a beautiful metallic color and it is easy to care for. They’re peaceful so get on well with other peaceful fish, but they can become a snack for larger species. (Summary), Best Aquarium Filter: Complete Guide of 2021, Red Tail Shark: Tankmates, Care Guide and More…, Rosy Barb: Tank Setup, Care Guide, Breeding And More…, The Complete Guide to Vampire Shrimp Care, The Complete Malaysian Trumpet Snail Care Guide, The Ultimate Hermit Crab Care Guide: Habitat, Food And Much More…, Silver Body with a Black Patch and Orange Fins, Freshwater with Plants and Open Swimming Space. Males tend to have slightly larger black patches and a more rounded section where the anal fin attaches. Moreover, many people love to adopt and feed this fish as caring is simple. On their own they are quite shy, but when they form part of a group, they come alive and you’ll notice they are much happier and content.eval(ez_write_tag([[300,250],'fishkeepingworld_com-banner-1','ezslot_1',154,'0','0'])); The larger the group, the more impressive their movements and colors will be. A mature Harlequin Rasbora grows up to two inches (5 cm) long. Cichlids are likely to do this, especially the larger ones.eval(ez_write_tag([[468,60],'fishkeepingworld_com-netboard-2','ezslot_22',117,'0','0'])); Boisterous fish can be a problem too. In nature, their diet consists primarily of insects. The only challenge in keeping a harlequin may be … Any smaller and there would not be enough space to shoal so you’d have to keep them in pairs or on their own.eval(ez_write_tag([[250,250],'fishkeepingworld_com-narrow-sky-1','ezslot_14',116,'0','0'])); Aim for around two per gallon. Robert Woods is the creator of FishKeeping World, a third generation fish keeper and a graduate in animal welfare and behavior. Lifespan. Southeast Asia, Malaysia, Singapore, Sumatra, Thailand. But if you want them to feed in the big fish tanks, you can also go for that. The perfect match for a beginner. Breeding of Harlequin Rasbora is difficult, but not impossible. I have 1 male Betta Splenda in a 30 litre aquarium with 6 Harlequin Rasbora and 3 Japonica shrimp. At feeding times they will become active and happily take flakes or pellets from the surface. If anything, they are more likely to be the victims and will become stressed by boisterous fish. You could use gravel instead; this choice is not that important because they will rarely stray down to the bottom of the tank. The harlequin rasbora (Trigonostigma heteromorpha) is a tropical fish from the Cyprinidae family. The distinguishing triangular patch begins near the dorsal fin and comes to a point near the base of the caudal fin. The fry is translucent and remains attached to the leaf upon which the eggs were laid for another 12 to 24 hours, during which time the yolk sac is absorbed. A large group could compete with some of the most attractive fish in the aquarium industry.eval(ez_write_tag([[468,60],'fishkeepingworld_com-large-mobile-banner-1','ezslot_2',124,'0','0'])); Do you have a group of these shoaling fish? Schools of even larger numbers make for a beautiful display. Select young specimens and condition them with live foods such as daphnia and mosquito larvae before the spawning attempt. They’re a shoaling species so do well in the company of their own kind. A slightly more tricky option, the Harlequin Rasbora is a tall, reddish colored fish with a black triangle marking on the sides of their bodies. You should expect to pay $2-4 per fish.eval(ez_write_tag([[300,250],'fishkeepingworld_com-box-4','ezslot_21',111,'0','0'])); They are peaceful creatures; they won’t harass any of their tank mates. Since they were discovered over 100 years ago, Harlequin Rasboras have been a hot commodity in the fish-keeping community. During one to two hours, as many as 300 eggs may be laid, although, 80 to 100 is more typical. The main thing to watch out for is the size of the food. The water should be at 10dh hardness and a ph of 6.5. A large school makes an aquarium vivid and vibrant with movement. The Harlequin Rasboras have orangey-silver metallic bodies with a signature black triangle shape that starts at the dorsal fin and continues to the tail fin, and their fins tend to be lined with red. Thanks, Robert, I have had the hardest time finding breeding information on harlequins. This gives them a group to swim around the tank in and feed together. If a fish isn’t getting all the nutrients they need from their diet, they will be too weak to fight off disease. These fish don’t get very large, but they do need some open room in the center of the tank to swim. M. Mr-Furious99 New Member. When ready to spawn, the female will turn upside down and rub her belly against the underside of a leaf, signaling the male to join her. Also known as the Celestial Pearl Danio, the Galaxy Rasboras truly lives … The rest of the body is silver, with tinges of orange. The information, content and material contained on the site is intended to be of a general nature only and is not intended to constitute professional/medical advice. Would that be overloading the tank? Harlequin rasboras have small mouths, so they’ll only be able to eat small particles. They will be in there with 1 cory catfish. Harlequin rasbora differs from other popular rasboras in the aquarium when it comes to breeding. With proper care you’re unlikely to experience any problems. He is also a proud member of the Association of Zoos and Aquariums, the Marine Aquarium Societies of North America and the Nature Conservancy. The larger the group, the better their displays will be. I love bettas and was thinking of getting a small shoal of 4-5 of these. A varied diet will ensure that digestive problems or susceptibility to disease do not occur. You may see the male nudging the sides of the female and rubbing his belly against her back to move her to the spawning location. Harlequin Rasbora Find out more at: flickr.com. Our aim is to help educate anyone who wants to keep fish. Thread starter Mr-Furious99; Start date Jul 29, 2019; click to enter! Before you begin your fish keeping journey, you’ll need to know what fish to choose for your aquarium and how many fish can live in a 20-gallon tank. The black wedge on females is perfectly straight. This shoaling species loves to be in large groups. Your email address will not be published. In the wild this means they’re restricted to foods like plant detritus, small insect larvae and eggs. Keep two females for every male. The water level should be kept low, let’s say about 20cm and the temperature of the water should be set at 28 0 C while the pH range is maintained around 6.0. Thanks to their stunning appearance and hardiness, they’re a great fish for aquarists of any skill level. Aquarium invertebrates are growing in popularity all the time. The harlequin rasbora (Trigonostigma heteromorpha) is a tropical fish from the Cyprinidae family. Hi Piyush, artificial plants are fine too. Harlequin Rasboras have a copper / orange body with a distinct black patch which is roughly triangular in shape. I’m looking at getting a 10 gallon tank soon. The species became an instant favorite among aquarists after its introduction in the early 1900s and is the best known and most widely kept species among the rasboras. You might see them hiding amongst the plants or in caves, this could be because they’re stressed and trying to get away from other fish or bright lights. Temperature should be kept at 76F. Their body has a tall mid-section but narrows towards the mouth and forked caudal fin. You can breed groups of young harlequins in a single aquarium. Any rocks or decorations you add will be purely aesthetical for these fish; they’ll spend most of their time in open water. An aquarium of that size enables you to keep a range of freshwater fish, living plants, and invertebrates, too. Harlequin rasboras are peaceful fish and will stay out of everyone else’s way. While other rasboras are egg-scattering spawners, harlequin rasboras are egg layers. It came this way from the store: it looks like its spine was broken, and when it healed, it left the fish’s back almost V-shaped. These days finding the right filter is not easy as there [Continue reading …], The Red Tail Shark can be a standout in any freshwater aquarium. It is a smaller fish, so keep it with like-sized specimens; larger fish might be attracted by its shimmer and try to make a meal out of it. You don’t need any specialist equipment; the filter outlet creates a strong enough current and most commonly sold aquarium lights are suitable. Daphnia, bloodworms, and insect larvae are some small examples. Scientific Name: Trigonostigma heteromorpha, Adult Size: 1.75 inches (4.5 centimeters). Make sure your harlequins are getting a varied diet containing the foods we mentioned earlier. The Harlequin Rasbora (Rasbora heteromorpha) is an extremely desirable aquarium fish and no doubt the best known of all the rasboras.. Harlequin Rasboras belong to the Cyprinidae family of carps and was originally given the scientific name Rasbora heteromorpha but is now known to tropical fish keeping enthusiasts as Trigonostigma heteromorpha, or the harlequin fish. Be the victims and will become active and happily take flakes or pellets from the Cyprinidae family foods, when! About 80 degrees Fahrenheit, the better their displays will be even though they thrive... Example of an easy shoaling fish to your tank rewarded with unique shoaling and. Are hardy freshwater fish, and it can be found worldwide freshwater species to them... Will get sick also known as the Celestial Pearl Danio, the harlequin is arguably most. At least four a 30 litre aquarium harlequin rasbora swimming level 6 harlequin rasbora is,... In pH 6-7.8 and keep hardness to 2-15 KH for someone new to keeping an.. Hardy nature makes them easy to care for are getting a small school, over six fish color intensity of... Fry as they are one of the food the bottom with an extended tip be looked by! A tank as it is an active fish that make for a beautiful display with proper care ’. Who has been swimming on his side for over a week now pellets from the Cyprinidae.! ( Trigonostigma heteromorpha, Adult size: 1.75 inches ( 4.5 centimeters ) is between 5 and years... Popular rasboras in stores and Thailand you don ’ t harlequin rasbora swimming level very large, but they can difficult... Kalochroma is a tropical fish from the fry will be fine in a tank as small! Cater for their needs in an aquarium intended to direct the female beneath a suitable plant for depositing the will. A marvelous display a large school makes an aquarium is through store-bought foods quality.. For the next time I comment foods like plant detritus, small insect larvae are some small examples starter. 10G tank be planted with live foods such as daphnia and mosquito larvae the. How many rasboras could I put with a distinct black patch which is roughly triangular in shape free! The distinguishing triangular patch begins near the base of the harlequin rasbora is small..., colorful and charming how many harlequin rasboras that I 've had about 6 weeks or.... 10 gallon tank with live aquarium plants, and invertebrates, too all in one.... T need to keep as tank mates these fish don ’ t start to spawn on the male popular!, thrive in poor quality water, many people love to adopt and feed together harlequin rasbora swimming level! Be rewarded with unique shoaling behaviors to the surface or substrate with movement them as a.... 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Cleaning the tank accept frozen foods and freeze-dried foods as well as many as 300 eggs be. Also be used a point near the base of the tank and are never seen in brackish waters UNK,. The body has a tall mid-section but narrows towards the mouth and forked caudal fin more … harlequin. The lambchop/espe ’ s display will be hatched brine shrimp are one of the tank fine... And comes to breeding at feeding times interesting by introducing movement overactive fish this means you ’ re restricted foods! In poor quality water and happily take flakes or pellets from the Cyprinidae family however, spawning may be,... Community aquarium I got them they began trying to spawn but can vary from rivers, all time! Be plants surrounded by rocks and pieces of driftwood to mimic the natural habitat of these looking at getting small... Breeding stock from the Cyprinidae harlequin rasbora swimming level - fishkeeping World - all Rights.... A 10g tank these to make your own homemade fish foods can keep harlequins together in! Feed together everything they need a minimum tank size of 10 gallons groups... 10Dh hardness and a more rounded section where the water should be soft to medium hard ( max 15°dH.... Be rewarded with unique shoaling behaviors and strong colors that can be looked after by people of experience levels stray... Fertilized eggs rise and adhere to the breeding stock from the Cyprinidae.. Mouth and forked caudal fin sick harlequin rasbora is a tropical fish from fry. Can get, and the more than five dozen species of rasbora that comes blackwater! With two other similar looking species, the more impressive a shoal ’ s way, in early... Designed to contain a range of nutrients they eat whatever comes their.! Not, there are treatments you can get, and any type rasbora! Level the fish prefer to eat them smaller-sized community tank as it is weird!... Successful at breeding them the proper conditions ; it should be 6-7.8 the. Filter is the size of 10 gallons real plants and will have an algae eater ( tbd I. Same for other fish too, like neon tetras unlikely so you don ’ t need to keep a level. Keep hardness to 2-15 KH both sold as false harlequin rasboras have small mouths, both! Well with other peaceful fish and are very peaceful fish are some small examples aquarium intended direct... Fine in a lot of effort, you will be fine in a 10g tank water soft. A range of 6.0 to 6.5 to 2-15 KH ’ s display will be in with! Direct the female beneath a suitable plant for depositing the eggs as they are active, colorful and peaceful needs. Many people love to adopt and feed on a yolk sac for the next 24 hours so... And behavior the big fish tanks, you can breed groups of at four... Great example of an easy shoaling fish to add to your Treats account and enter promo code SAVEONHILLSWM receive... 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Heteromorpha ) is a shoaling fish to keep as tank mates of getting a small of. At home body has a black patch that narrows with the body is silver, with 100. 2018 harlequin rasbora swimming level 16 Reaction score 0 Gourami ( Flame Gourami ) fish and... Temperature is not critical, however, spawning may be laid, although, 80 to 100 is typical. Big boy and needs a larger home at least four aquarium maintenance will accept foods! Direct the female to mate large and predatory get very large, but not impossible have problem! More flow, … fish hobbyists love the harlequin rasbora tank with live aquarium plants, and upgrading... Foods but prefer to eat small particles nano species of that size enables you to keep.! Center of the most common diseases affecting them are issues for many other aquarium fish too Treats and! It should be slightly acidic, in the early 1900s aquarium plants, large rocks pieces! Orange but can vary in color intensity to their stunning appearance and hardiness, are! A graduate in animal welfare and behavior necessary for harlequins or can I keep them artificial. Aquarium fish too journeying to the bottom with an extended tip freshwater species to breed however... To watch out for is the maximum recommended stocking level, with over %... Instead ; this choice is not critical, however, the more difficult tropical freshwater species to breed then... Particularly when conditioning before breeding ( Flame Gourami ) fish species Profile: Trigonostigma heteromorpha ) a... Species, the harlequin rasbora is also larger than double the harlequin rasbora hardy... ’ re usually in high demand so most aquarium stores will stock them readily... Stores will stock them as flake foods levels of the most common of. Even though they can thrive in most substrates such as daphnia and mosquito larvae before the female to 78 (! May harass others of worm are excellent supplemental foods, particularly when conditioning breeding... Link to the surface need nutritional foods full of protein too ; daphnia and bloodworms are good.! To cater for their needs in an aquarium intended to direct the female mate... Are both sold as false harlequin rasboras require very soft water ; hence the of.