Identity and locality
Lasiancistrus caucanus Eigenmann, 1912
Upper Cauca River basin, Colombia, under the 2023 integrative revision
Diagnostic evidence and naming
The 2005 genus revision grouped planiceps, mayoloi and volcanensis under L. caucanus; this dated treatment was revised using morphology and DNA in 2023. Emarginate rather than forked tail and abdominal plating diagnose it against several congeners. The 2023 molecular and anatomical revision restricts L. caucanus to the upper Cauca and recognizes L. mayoloi, L. volcanensis and L. wiwa separately; the older 2005 broad synonymy is superseded for these populations.
Breeding and genetics limitations
The revision is taxonomic synonymy, not evidence of hybridizing source populations or creating captive fin morphs.
Original references
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Public Discord research discussion
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