Cheirocerus
sp. 1
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ScotCat
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Relevant Information: |
The Pimelodid catfish genus Cheirocerus
Eigenmann is redefined on the basis of its specialised lips,
premaxilla and swim bladder. Sovichthys Schultz is
synonymized with Cheirocerus. A revision of Cheirocerus
reveals that C. leptus (Eigenmann and Pearson) is a
synomym of C. goeldii (Steindachner).
The three species of Cheirocerus can be readily distinguished
on the basis of total number of gill rakers on the first arch:
17-21 in C. eques, 23-27 in C. goeldii and
30-33 in C. abuelo. Colour pattern, form of the occipital
and other differences also help to distinguish the
species. C. eques and C. goldeii are known
from large, turbid rivers of the Amazon basin, and C. abuelo
is known only from the Lago Maraciabo basin of northwestern
Venezuela. The apparent absence of Cheirocerus in the
Rio Orinoco basin is an interesting discontinuity, but may reflect
the need for further exploration. Aquarium Care:
Not a lot of information is forthcoming for this genus but they
are nocturnal and a mid sized pim with sizes ranging from 15-20
cm. SL. Diet: Mostly consists of benthic invertebrates,
with chironomid larvae being a dominant component, but also
including ostracods and mayfly nymphs. Remarks:
C. goeldii is more typical of lowland large rivers
where the water may be warmer and deeper, though it may also
occur far upstream. C. eques appears to occur closer
to Andean foothills where rivers may be cooler and shallower. |
Common
Name: |
None |
Synonyms: |
None |
Family: |
Pimelodidae |
Distribution: |
South America:
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Size: |
15-20cm. (6-8ins) |
Temp: |
22-27°C (71-81°F) |
p.H. |
6.0-7.2. |
Reference: |
Stewart, D.J and M.J. Pavlik,
1985. Revision of Cheirocerus (Pisces: Pimelodidae) from tropical
freshwaters of South America. Copeia 1985(2):356-367.
Froese, R. and D. Pauly. Editors. 2014.FishBase.
World Wide Web electronic publication. www.fishbase.org, ( 11/2014
) |
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