Above: The picture above shows a young premium quality Harlequin Rasbora, swimming in one of our aquariums, when one of us took this picture.
Comments: This is a Premium Pet Fish, and we never see Premium Harlequin Rasbora like these in any of the live fish stores or in the online stores that we visit.
Premium Pet Fish are more energetic, hardier, and have brighter colors with a beautiful metallic sheen.
Click here to learn more about Premium Pet Fish.
Origin: Their ancestors originally lived in Malaysia, but now they're found living in aquariums throughout the world.
Maximum Size: In aquariums Harlequin Rasbora can grow to be about 1.25" long, including their tails.
Behaviors: Harlequin Rasbora are active swimmers and are not aggressive.
Compatibility: Some recommended tank mates include other small Rasboras, small Rainbowfish, small Danios, small Gouramis, and many other small aquarium fish.
Click here to read more about compatible groups of pet fish.
Temperature: Harlequin Rasbora can live pretty well from about 70 to 80 degrees F., but they're probably most comfortable at about 76 degrees F.
Click here to learn about aquarium temperature, aquarium thermometers, and aquarium heaters.
Feeding: Premium Fish Food Flakes.
Click here to learn more about and shop online for premium fish foods.
Water Conditions: Harlequin Rasbora seem to be tolerant of a wide range of water conditions. Probably a pH of about 7 with moderate hardness is best.
Most water in the US has a higher pH and is harder but seems to be OK, so it's probably best NOT to adjust the pH or the hardness of the water.
Here in our facilities the water is hard and the pH is usually about 7.8.
We ship them in this water.
Click here for a lot more information about aquarium water conditions.
Aquarium Size: It is probably best to house these fish in at least a 20-gallon tank, but bigger is better.
Decor: Harlequin Rasboras do not need gravel, and a layer of gravel more than 1/4" thick will usually fill with bits of uneaten food that will contaminate the water.
Click here for more about aquarium gravel.
Live Plants are beautiful and improve the water quality.
Like most small fish, Rasboras seem to enjoy live plants.
Aquarium Filter: Bio-Wheel Filters are highly recommended.
A Penguin 200B Filter in an aquarium with 20 to 30-gallons of water is OK.
Click here to learn more about aquarium filters.
The addition of Lava Rocks will keep nitrates in the ideal range.
Click here to learn more about using Lava Rocks in aquariums.
Life Span: Harlequin Rasboras can live for several years with good water and premium food.
Gender: Males are usually darker and more metallic, while the females are plumper.
Breeding: Female Rasboras scatter their eggs onto leaves as the male fertilizes them.
Popularity: Harlequin Rasboras are very popular fish.
Names: The scientific name of the Harlequin Rasbora is Trigonostigma heteromorpha.
Variations: This fish occurs over a wide area that is disconnected by oceans.
Therefore one would expect variations, and they do exist.
These variations may be subspecies or closely related species.
We hope you've enjoyed reading these comments.
DrTom - 02/15/2015
We have 380-aquariums with lots-and-lots of popular aquarium fish plus lots-and-lots of rare fish!
We consider ourselves to be the link between the world's best sources of fish and the world best customers. We love our work, and we are very responsible.
All of our fish are Premium Quality Fish from the best suppliers in the world. Our fish have better health, more energy and brighter colors, as you can see in our pictures on this website.
We also offer lots and lots of information about keeping pet fish, all from the knowledge of the Bailey Brothers, who have a combined total of 100+ years of experience as breeders, wholesalers, and retailers of pet fish!
Our fish and our customers are treated with the best of care, and we work energetically everyday to make sure every customer enjoys their new fishy friends.
When you purchase pet fish from us, you know you're receiving premium quality fish and premium quality service.
"Received my fish last night and was so pleased! They all arrived alive and appeared to be healthy.
"Once in the tank, they became very active and are now thriving in their new home.
"Beautiful fish, I asked for color and aquariumfish delivered. Processing and shipping was extremely quick."
Nevin and DrTom, the Bailey Brothers
This website is owned and operated by the Bailey Brothers, DrTom and Nevin, who've been together in the fish business for more than 50-years.
The Product Manager has been with the company for more than 35-years.
So we feel very confident that this is the fishiest crew anywhere.