Like all the orange-blotched
Corydoras from the upper Rio Negro drainage,
Corydoras nijsseni is very variable
in the black parts of the colour pattern. There are
forms with broad and forms with very narrow stripes,
depending on the locality. The other orange spotted
species which are syntopic with Corydoras
nijsseni mostly show the same variation. The
form with a very broad band (only in males), has been
erroneously given the C-number C111.
Lineage: Part of the so called "Elegans
Group" which would place it in Lineage 5. A revision
in the future could involve the resurrection of the
genus name Gastrodermus (Cope, 1878), with
the designated type species: C. elegans.
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.
Common
Name:
C111
Synonyms:
None.
Family:
Callichthyidae
Distribution:
South America:
Brazil, Main whitewater tributaries of the Rio Negro
and upriver from Sao Gabriel da Cachoeira.
Size:
Male: 4.5cm (1¾ins)
Female: 5.0cm (2ins)
Temp:
23-27°C (73-81°F)
p.H.
6.0-7.2.
Reference:
Alexandrou,
Markos & Taylor, Martin. (2011). Evolution,
ecology and taxonomy of the Corydoradinae revisited.
Fuller, A.M. & Evers, Hans-Georg: Identifying
Corydoradinae Catfish P.182-183.
Ian A. M. Fuller & Hans-Georg Evers (2011).
Identifying Corydoradinae Catfish Supplement 1. Ian
Fuller Enterprises. Seus, Werner: Corydoras, The most Popular
armoured catfishes of South America.
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