Billy Grant (1)
Allan James (5) Zhou Hang
Stuart McIntosh (3)
Dorsal spines (total): 2; Dorsal soft rays (total):
7 - 7; Anal spines: 1; Anal soft rays: 5; Vertebrae:
28. Can be distinguished from all its congeners by
the following putative autapomorphies: unique, distinct
colour pattern consisting of vertically elongated
blotches spanning from the dorsal midline to the ventral
border of flanks; complete lateral line, without the
gap plates (midbody plates without lateral line perforations)
present in other Otocinclus. Can also be
differentiated by having high number of teeth (30-45
in premaxilla and 23-36 in dentary). Differs from
mura and Otocinclus
bororo by having a small metapterygoid
channel and one W-shaped mark in the caudal fin. Habitat:
Found in a medium size creek with clear water and
lots of marginal vegetation. Aquarium Care:
Keeping Otocinclus cocama in the aquarium
is not too much of a problem but they do seem to be
a bit more sensitive to the captive environment than
other members of this genus. You should provide them
however, as is with most Otocinclus, a planted
tank, as they are found in the wild amongst abundant
vegetation. Provide them with vegetable based foods
or they will start to damage plants in the aquarium.
Substrate can be of small rounded gravel or sand.
I personally prefer the latter as their faeces (and
it can be a lot with a vegetarian diet) sits atop
this medium and can be hoovered off when carrying
out your regular water changes. Etymology:
During the last century, the Cocama culture has been
mostly assimilated by the regional society, losing
their language and identity, being thus threatened
as a group. The name is treated as a noun in apposition.
Otocinclus cocama is named after the Cocama-
Cocamilla Indians that used to be dominant in the
lower Ucayali and Marañon rivers. The present
estimations point to a little more than 10,000 people
in Peru, plus a few hundreds in Colombia and Brazil.
South America:Peru, Lower Ucayali and Marañon Rivers.
Type locality: quebrada Yanayacu
(approx. 04º55'S, 073º43'W), tributary to
the caño of the cocha Supay in Jenaro Herrera,
Provincia Requena, Departamento Loreto, Peru.
C.J. Jr., 2007. Checklist of catfishes, recent
and fossil (Osteichthyes: Siluriformes), and catalogue
of siluriform primary types. Zootaxa 1418:1-628. Reis, R.E.
2004 Otocinclus cocama, a new uniquely colored loricariid
catfish from Peru (Teleostei: Siluriformes), with comments
on the impact of taxonomic revisions to the discovery
of new taxa. Neotrop. Ichthyol. 2(3):109-115.