Similar to CW020 which was
thought to be C.
has proven to be the CorydorasWorld code number CW036
(Corydoras arcuatus). Description:
Dorsal spines (total): 1; Dorsal soft rays (total):
8; Anal soft rays: 8. Distinguished from all its congeners
except Corydoras arcuatus, Corydoras
narcissus, and Corydoras
gracilis, by having a long, arched,
dark stripe, running parallel to the dorsal profile
and extending at least from the anterior margin of
the first dorsolateral body plate to the caudal peduncle.
Can be diagnosed from Corydoras arcuatus,
Corydoras gracilis, and Corydoras narcissus
in having the arc-like stripe terminating posterior
to the orbit (vs. extending onto snout). Further differs
from Corydoras arcuatus by having fewer free
vertebrae (21 vs. 27); lateral profile of the snout
distinctly rounded (vs. nearly straight); a greater
preadipose distance (84.0-86.7% SL, vs. 82.9-83.8%
SL); and the posterior limit of the cleithrum at a
vertical through the dorsal-fin spinelet (vs. between
the third and fourth dorsal-fin rays); from Corydoras
gracilis by having fewer free vertebrae (21 vs.
27); arched stripe extending posteriorly to the base
of the lower caudal-fin rays (vs. reaching the base
of the upper caudal-fin rays); and the second infraorbital
contacting only the sphenotic (vs. contacting both
the sphenotic and compound pterotic); from Corydoras
narcissus in having the arched stripe extending
posteriorly across the lower caudal-fin rays (vs.
extending over the lower caudal-fin rays); lateral
profile of the snout distinctly rounded (vs. nearly
straight); and minute and weak pectoral-spine serrations
(vs. large and strong serrations). Lineage:
Placed in Lineage 9, the "short-snouted"
species with the designated type species: C. punctatus.
A revision in the future would constitute the resurrection
of the genus name Hoplosopma (Agassiz, 1846).
Aquarium Care: This is akin to most
of this genus, very peaceful, and would be best housed
with small to medium sized tankmates such as Tetras,
Rasboras and Danios or in a species tank for breeding
purposes. Best to purchase 6 individuals or more as
they will be happier in a group. Diet:
Readily accepts a mixed and varied diet which includes
granular foods, tablet food, frozen bloodworm and
a good quality flake.
Brazil, Amazonas State, Coari Igarapé da Onça,
Rio Urucu basin, tributary of Lago Coari, Rio Solimoes
& Taylor, Martin. (2011). Evolution,
ecology and taxonomy of the Corydoradinae revisited.
Britto, M.R., W.B. Wosiacki
and L.F.A Montag,
2009. A new species of Corydoradinae catfish (Ostariophysi:
Siluriformes: Callichthyidae) from Rio Solimões
Basin, Brazil. Copeia 2009(4):684-689.
Froese, R. and D. Pauly. Editors. 2016. FishBase.
World Wide Web electronic publication. www.fishbase.org,
( 10/2016 ). Grant S., 2014, Catfish Study Group
Journal V15 - I4. Ian A. M. Fuller & Hans-Georg Evers
(2011). Identifying Corydoradinae Catfish Supplement
1. Ian Fuller Enterprises. www.corydorasworld.com