Other Names: Lambchop Rasbora, False Harlequin, Narrow Wedge Harlequin.

The Espes RasboraTrigonostigma espei(previouslyRasbora espei) is yet another amazing aquarium fish from Southeast Asia. It is a relative newcomer, described by Meinken as recently as 1967. This fish is found throughout the eastern slopes of the Gulf of Thailand in Cambodia andThailand, and more recently, a population has been found onthe Island Phu Quoc of Vietnam.

This fish is often confused with two of its close relatives,theHarlequin Rasbora Trigonostigma heteromorphaand theGlowlight Rasbora Trigonostigma hengeli. The name ‘Espes Rasbora’ is alsooften mis-applied tothe Hengels Rasbora, and bothfish are frequently sold under the name of ‘False Harlequin’ as well.