Black-striped Rasbora Trigonopoma gracile (prev. Rasbora gracilis)

Black-striped Rasbora
Black-striped Rasbora
Black-striped Rasbora
The Black-striped Rasbora belongs to the carp family and is native to peat swamp forest and dark water streams and rivers of Malaysia and Indonesia. It closely resembles the Siamese and Red Algae-eaters and is often found together with the related Glowlight/Redstripe Rasbora, Trigonopoma pauciperforatum (prev. Rasbora agilis). It grows to some 5 cm long.
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Blackline Rasbora Rasbora borapetensis

Blackline Rasbora
Blackline Rasbora
Blackline Rasbora
The Blackline Rasbora, also called Red-tailed Rasbora, is also in the carp family and is native to slow moving or still water of ponds, streams and river systems of Southeast Asia. A schooling fish, it grows to some 6cm long. Pictures left and right above include the Hengel's Rasbora.
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Hengel's Rasbora Trigonostigma hengeli

Hengel's Rasbora
Hengel's Rasbora
Hengel's Rasbora
Hengel's Rasbora, also called the Glowlight Rasbora but that is a name also used for the Redstripe, is native to slow moving forest streams of Indonesia's Sumatra and Borneo. The fish find each other in the dark, peaty streams by the glowing stripe on their flanks. They grow only to some 3cm long.