Yaluwak primus
Yaluwak primus Lujan, Armbruster & Werneke, 2019

Family:  Loricariidae (Armored catfishes), subfamily: Hypostominae
Max. size:  12.29 cm SL (female)
Environment:  benthopelagic; freshwater
Distribution:  South America: Guyana.
Diagnosis:  This species is distinguished from the Hypostominae genera Corymbophanes, Hypostomus and Pterygoplichthys and from all non-Hypostominae loricariids by having a cluster of > 25 evertible cheek odontodes (vs. no cheek odontodes or < 10); differs from all other members of the Hypostominae except some Ancistrus species Araichthys loro Zawadzki et al., 2016, Chaetostoma carrioni (Norman, 1935) and Leptoancistrus by the absence of an adipose fin, having instead a low ridge of azygous plates; differs from all Ancistrus species and Chaetostoma carrioni by having a fully plated snout, from Araichthys loro by having a taller caudal peduncle. 10.9, 14.2% SL (vs. ?8%) and longer tooth rows 23.7, 24.7% HL (vs. 19%) and from Leptoancistrus by lacking cheek odontodes that extend past the cleithrum and having dorsal fin ii,7 (vs. ii,8); differs from Corymbophanes by its larger maximum body size, 12.29 cm SL (vs. 10.06 cm SL) (Ref. 130535).
Biology: 
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless


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