Similar to Lasiancistrus but broader when viewed from above especially in larger adults. Striped species of Dekeyseria were placed in Zonancistrus but because this was only based on colouration, they are more commonly placed with the non-striped species in Dekeyseria.
Sexing
Mature males have substantial odontodes both on the thick pectoral ray and the posterior part of the body. The male also have a broader head than the female.
Breeding
Narrow (height) cave breeders.
Size
Smallest 130mm, largest 200mm, average 162mm, most commonly 130mm. All SL.