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Harlequin rasbora. Niice. Swiping this to make a Desktop version of my tank.
harlequin tetra, yes?
Trigonostigma heteromorpha, the Harlequin barb! And how high quality of the image!!! I wouldn't believe it's possible to capture it so gently, it's a very agile species of fish and a rapid swimmer. Thanks for sharing this cutie, AbsurdWordPreferred!