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Order : Cypriniformes
Family : CYPRINIDAE
Species : Trigonostigma heteromorpha
Maximum Length : 5 cm
This attractive species
inhabits clear, acidic, tropical forest streams, where it occurs in small
shoals. It is easily identified by the black, triangular patch at the
posterior end of the body. In males this patch is more extensive towards the
belly and is more clearly defined than in females.
The species is omnivorous,
but prefers aquatic invertebrates and small insects. It occurs in many parts
of Southeast Asia, reportedly as far east as New Guinea and northern
Australia.
The Harlequin Rasbora is
also a popular aquarium fish.
Fig 1 : A small shoal of Harlequin Rasbora in a shallow forest stream,
Singapore.
Fig 2 : A pair exhibit courtship behaviour : the male is above.
Fig 3 : A lone adult of around 3 cm.
References : F1
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