cocama Reis, R.E, 2004
contributors to this species:
Grant (1) Allan James (3) Zhou
||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 Otocinclus
huaorani, Otocinclus mura and
Otocinclus bororo by having a small metapterygoid channel
and one W-shaped mark in the caudal fin. Found in a medium size
creek with clear water and lots of marginal vegetation. 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. 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. 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.
: 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.
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.
Ferraris, C.J. Jr., 2007. Checklist
of catfishes, recent and fossil (Osteichthyes: Siluriformes), and
catalogue of siluriform primary types. Zootaxa 1418:1-628.
ScotCat Factsheet no.13, Nov. 2007.