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Home > Freshwater Fish > Rasboras > Harlequin Rasbora Group
Harlequin Rasbora Group (Rasbora heteromorpha)
Harlequin Rasbora Group
Please Note: Due to variations within species, your item may not look identical to the image provided. Approximate size range may also vary between individual specimen.
Please Note: Due to variations within species, your item may not look identical to the image provided. Approximate size range may also vary between individual specimen.
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Harlequin Rasbora Group (Rasbora heteromorpha)

Overview

The Harlequin Rasbora is an extremely desirable aquarium addition thanks to its gorgeous metallic coloration and ease of care. It's not difficult to see why so many hobbyists treasure it. A large school of Harlequin Rasboras fill the upper areas of the aquarium with movement and color so lively and vibrant that even non-hobbyists marvel at the display.

The Harlequin Rasbora is easily identified by its characteristic black "pork chop" shaped patch. Males will have a beautiful lustrous copper/orange body while females will be exhibit a more golden coloration . The distinguishing triangular patch begins near the dorsal fin and comes to a point near the base of the caudal fin. The patch on the female Harlequin Rasbora is slightly rounded at the bottom with an extended tip. In contrast, the patch on the male Harlequin Rasbora is straight. The female Harlequin Rasbora is also larger than the male. Juveniles will darken as they mature.

The Harlequin Rasbora does best in an established planted aquarium with open areas for swimming. The Harlequin Rasbora should be kept in schools of 8-10 individuals and housed with other small, peaceful fish. The mild nature of the Harlequin Rasbora makes it a great community fish.

Rasbora heteromorpha generally spawns on the undersides of broad-leaved plants. A breeding tank with shallow, warm, acidic, soft water with broad-leaved plants should be set up. To encourage spawning, pair a young (9-12 months old) female Harlequin Rasbora with a two-year old male and offer live food items. After spawning, remove the parents and keep the aquarium dark until the eggs hatch (after about 24 hours). Feed the fry infusoria.

An omnivore, the Harlequin Rasbora does well on a diet of prepared flake food, as well as freeze-dried bloodworms and tubifex.

Approximate Purchase Size: 1/2" to 1"

Customer Testimonials

Jason S Anchorage , AR
I got five of these for my 10 gallon tank, and I have to say, they are really nice. Small, hardy, pretty, and cute. I recommend these to anyone who is looking to add some nice little schooling fish to their aquarium, and this place is a great one to order them from!
S. Shirkey Glendale , AZ
I have 5 of these along with a black skirted tetra and 8 black neon tetras. They are all very happy and easy to take care of. It is a very nice mix of fish.
Dave O'Brien Westminster , MD
I have 10 Rasboras in a 55 gallon tank along with 25 neons, 10 black tetras, 10 glow light tetras, 5 zebra danios, 5 black shirt tetras, 10 serpea tetras and 4 small bala sharks. Everybody gets along fine because of the schooling numbers. The Rasboras do like to swim in the upper third of the aquarium, which is a little different than most other tetra (especially the glow light tetra, which hang around at the bottom.) One thing people rarely talk about when it comes to the Rasbora is the calming affect they seem have on zebra danios, which tend to me a little nippy of other fish. Adding a school of Rasboras will cause the zebras to school together with them and get them to stop chasing other fish. Beautiful and useful... a great fish. I like to add a power head to move the water across the back of the tank as well. Sometimes schooling tetras will take advantage of the current and school back and forth in these currents. I think it's fun for them.
Jan C Topeka , KS
They are truly a beautiful little fish. Hard to believe the little ones you purchase are someday going to be 2" long - they are the smallest things in my aquarium. Good schoolers that stay together all of the time.
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