Identity and locality
Hypancistrus margaritatus Tan & Armbruster, 2016
Takutu River in the Rio Branco/Negro drainage, Guyana
Diagnostic evidence and naming
Named in 2016 with dense light spots on dark base; original holotype has consistently sized spots near nostril diameter, unlike larger contradens or smaller lunaorum patterns. Exact identification also depends on anatomy.
Breeding and genetics limitations
No named first aquarium breeder, true L-number or known dominant/recessive spot grade confirmed by original description.
Original references
Links are research leads; they do not certify every statement. Check original taxonomy and date.
Public Discord research discussion
Follow the original forum topic. It is a discussion record, not independent scientific verification.