Identity and locality
Hypancistrus contradens Armbruster, Lujan & Taphorn, 2007
Upper Orinoco, Venezuela
Diagnostic evidence and naming
2007 original separates large white body spots (larger than nasal opening) from finer-spotted H. lunaorum; 'L201a' is a later unofficial hobby shorthand, not a formally assigned L number.
Breeding and genetics limitations
Do not buy/sell unrelated L201 or L471 as confirmed contradens based solely on large juvenile spots.
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.