Ancistrus tombador Fisch-Muller, Cardoso, da Silva & Bertaco 2005

Can be easily distinguished from all congeners except Ancistrus reisi and A. jataiensis by lacking adipose fin. A series of 3 to 5 median, unpaired platelets forming a low crest is present in place of adipose fin. Platelets are followed by at least two dermal plates (more often three) of the dorso-lateral series that join dorsally, vs. platelets nearly immediately followed by the plate-like procurrent caudal rays in A. reisi and A. jataiensis. It further differs from all species of Ancistrus by the unique combination of the following characters: naked margin of snout large and tentacles usually absent in both sexes, body very narrow (cleithral width 27.5-31.2% SL, mean 29.4), and long caudal peduncle particularly depressed (depth 8.3-9.2% SL, mean 8.7) (Ref. 54498).Description: D i,7; P i,6; V i,5; A i,4; C i,13,i or C i,14,i (Ref. 54498).

Dorsal soft rays (total): 8; Analsoft rays: 5; Vertebrae: 28

Inhabits small rivers (Ref. 54498).

Ancistrus tombador is a species of catfish in the family Loricariidae. It is native to South America, where it is known to occur in small rivers in the state of Mato Grosso in Brazil. The species reaches 6.3 cm (2.5 inches) SL and is distinguished from other members of the genus Ancistrus (except A. reisi and A. jataiensis) by the absence of an adipose fin, which in this species is replaced by a series of unpaired platelets that form a low crest. The specific epithet of this species refers to Serra do Tombador, where the type specimen was collected.