Parotocinclus adamanteus

Parotocinclus adamanteus is told apart from all other species in its genus by having a fleshy swelling which creates a distinct border to the snout, this is decorated with moderately hypertrophied odontodes in the adult males. The pectoral fin in males has branched rays which decrease in size, forming a pointed rear edge to the fin. In addition, P. adamanteus can be also be told apart from other species in teh genus by the absence of a plate on the snout and by the absence of abdominal plates on the underside, a high number of teeth on the premaxilla, and by the possession of a short and centrally expanded lower part of the cheek canal plate. This species reaches a standard length of 65 mm (2.6 in).

Parotocinclus adamanteus is endemic to Brazil where it occurs in the Paraguaçu River basin in the state of Bahia in 5 creeks in the drainage basin of the São José River in the municipalities of Lençóis and Andaraí. It is found in rocky areas with strong currents.

== References ==

Parotocinclus adamanteus is classified in the genus Parotocinclus, is a combination of para, meaning "near", and the genus Otocinclus, the genus the type species, P. maculicauda was originally thought to be a member of. The specific name, adamanteus, means "of the diamond" and refers to the Chapada Diamantina, a large plateau in central Bahia.