Above: a nice young Fireline Devario swimming in one of our aquariums, when one of us snapped this picture.

Comments: This is a Premium Pet Fish, and we never see Premium Devarios like these in any of the live fish stores or 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: This species was discovered in 2006 in Myanmar, a country in Southeast Asia.

The fish is now being produced in large quantities by fish farmers, and it now lives in many aquariums throughout most of the world. But this is still a relatively rare aquarium fish.

Maximum Size: The maximum size of these fish in an aquarium is usually a little bit less than 2-inch long.

But almost all fish continue to grow throughout their entire lives, so it's possible that old fish may occasionally grow to be unusually large. Someday we might see one that's more than 2" long. ;^ }

Behaviors: These little guys are moderately active, and the males energetically quarrel with each other but usually do no harm.

Compatibility: Some recommended tank mates include small fish like, Harlequin Rasboras, Neon Tetras, Cardinal Tetras, Guppies, Corydoras Catfish, Honey Gouramis, etc.

Click here to read more about compatible groups of pet fish.

Temperature: They can live pretty well from about 68 to 78 degrees F., but they're probably most comfortable at about 74 degrees F.

Click here to learn about aquarium temperature, aquarium thermometers, and aquarium heaters.

Feeding: Premium Fish Food Flakes, which should be crushed into particles.

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Water Conditions: This fish seems to be tolerant of a wide range of water conditions. Probably a pH of about 7.5 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: These fish can do well in small aquariums, but it's probably best to keep them in at least a 20-gallon aquarium, and bigger is better, because the males quarrel with each other. Keep at most one fish per gallon.

Decor: They 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.

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Live Plants are beautiful and improve the water quality. Celestial Pearl Danios seem to like plants and do better in an aquarium with 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 just right for these fish.

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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: They will probably live for a few years with good water and good food.

Gender: Mature males are more colorful than the females.

Breeding: Danios scatter their eggs on plants or special breeding mops made of nylon yarn.

Popularity: This is a relatively new aquarium fish that's steadily gaining popularity as a good fish for small aquariums.

Names: The scientific name is Devario sondhii .

Variations: Apparently there are now several minor variations, but we haven't seen them yet.

We hope you've enjoyed reading these comments.