Hengeli Rasbora and Similar Species
Trigonostigma hengeli
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Open the appSeveral fish can be confused with Hengeli Rasbora. Here are the key differences.
Species often confused with {name}
Harlequin Rasbora
Trigonostigma heteromorpha
Key differences: The black wedge mark in T. heteromorpha is typically larger, more triangular, and extends further anteriorly, often reaching the dorsal fin base. It also lacks the prominent iridescent orange stripe above the black mark seen in T. hengeli. T. heteromorpha generally has a deeper body and can grow slightly larger.
Lambchop Rasbora
Trigonostigma espei
Key differences: The black mark in T. espei is more 'lambchop' or 'hatchet' shaped, often with a more defined, rounded anterior edge and a less elongated, more compact appearance compared to T. hengeli. The iridescent stripe above the black mark in T. espei is typically redder and more intense.
Blackline Rasbora
Trigonostigma somphongsi
Key differences: T. somphongsi has a much thinner, more linear black stripe along its flanks, lacking the distinct wedge shape of T. hengeli. It is also generally smaller and less commonly encountered in the aquarium trade.
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