Identity and locality
Guyanancistrus tenuis Fisch-Muller, Mol & Covain, 2018
Mapaoni tributary, upper Jari basin, Brazilian side of Mitaraka massif
Diagnostic evidence and naming
Type published in 2018 from Pará, Brazil. Relatively slender depressed body and a diagnostic barcode set distinguish it from the other Guiana Shield species. Species-specific specialist records identify a Rio Mapaoni tributary in the upper Jari basin as type locality; the name is not a captive genetic strain.
Breeding and genetics limitations
Hard-to-source river species without captive proof; no recorded founder of an aquarium strain.
Original references
Links are research leads; they do not certify every statement. Check original taxonomy and date.
Public Discord research discussion
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