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Danio aequipinnatus giant
Aquatropic, November 10, 2016

There are few fishes quite as energetic as the Giant Danio, a species that seems to be in perpetual motion. Originating from the swift-flowing rivers of India, these powerful swimmers are perfectly adapted for heavy water currents, but they are also just as at home in the calm waters of a home aquarium.

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Rasbora heteromorpha
Aquatropic, October 26, 2016

The distinctive beauty of the Harlequin Rasbora (AKA the Porkchop Rasbora) has made it a familiar sight in aquarium stores since the earliest days of the hobby. This attractive and peaceful schooling fish is perfectly at home in most any community aquarium, rarely bothering other tank mates and lending a gorgeous coppery tone as it swims about.

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Rasbora borapetensis
Aquatropic, October 20, 2016

he Brilliant Rasbora is a study in understated beauty. Its shape is perfectly streamlined for quickly cutting through its watery home, while the black and gold lines running along the body add just enough panache to whet the appetite of any discerning aquarist.

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Astyanax mexicanus tetra blind cave fish
Aquatropic, October 13, 2016

Caves are famous for the many highly modified species that live their entire lives in perpetual darkness. Many different groups of animals have adapted to this by evolving similar features, such as a loss of pigmentation, reduced or absent eyes, heightened sensory organs and even lowered metabolism and decreased sleep.

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Tinfoli barb
Aquatropic, July 29, 2016

With its sleek profile and eye­-catching silvery scales, the Tinfoil Barb (Barbonymus schwanefeldii) makes for an impressive addition to the home aquarium; however, this is one species that relatively few aquarists have the means to adequately house long­-term.

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