Identity and locality
Pseudacanthicus nyktos Lopes, Sousa & Chamon, 2024
Rio Xingu, downstream of Belo Monte impact zone, Brazil
Diagnostic evidence and naming
2024 original description documents a dark body with pale gray vermiculate spots on dorsal and ventral surfaces and fins, lower maximum tooth counts and distinctive osteology. Do not assign an L-number to the species without original crosswalk evidence. Eschmeyer verifies the original 2024 Xingu type and current species. A specialist trade directory lists L185 for this name; the 2024 primary description does not independently validate the historical code, so retain that distinction.
Breeding and genetics limitations
Conservation, distribution and breeding require species-specific field and breeder data, not assumption from Scarlet Cactus L025.
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.