Currently, from a scientific point of view, only four harlequins are distinguished (plus the aberrant Trigonostigma somphongsi); however, genetic studies and – as well – simple observation of live, wild collected specimens of different origins clearly show that there are many more species. Trigonostigma hengeli is the tiniest and most dainty species of the three accepted ones. It hardly grows larger than 3 cm. The species is found on the large Sunda islands of Sumatra and Borneo. The typical blackwater species has a bright shining stripe over and in front of the triangular lateral spot.
We have beautiful wild collected specimens in stock. Usually they show a light pink and orange basic colour, but if they come in mood for breeding they develop an intensive reddish and purple colour. The photographed fish are only 2 cm long (about 2.5 cm inclusive the caudal fin) and obviously fully mature. The common name „swift (harlequin) rabora“ should be used preferably for that species instead of „glowlight rasbora“ (which leads to confusion with Trigonopoma pauciperforatum) or „lambchop rasbora“ (which is also used for Trigonostigma espei).
For our customers: the fish have code 452202 on our stocklist. Please note that we exclusively supply the wholesale trade.
Text & photos: Frank Schäfer