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Pseudancistrus zawadzkii Silva, Roxo,
Britzke & Oliveira, 2014 |
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Image
contributors to this species: |
| Johnny
Jensen's Photographic Library (3)
Haakon
Haagensen
(2)
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ScotCat
Sources: |
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Other
Sources: |
  
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Relevant Information: |
Dorsal spines (total): 2; Dorsal
soft rays (total): 7; Anal spines: 1; Anal soft rays: 5. Pseudancistrus
zawadzkii can be distinguished from all known congeners,
except members of the P. barbatus group, by the possession
of hypertrophied odontodes along the snout margin and the absence
of evertible cheek plates. It further differs from other congeners
by the combination of the following characters: whitish spots
that abruptly increase in size between the head (diameter 1.1-1.3
mm) and body (diameter 2.6-3.0 mm); odontodes along margin of
snout increasing gradually in length from posterior of snout
tip to cheek; longest odontodes on posterior most portion of
non-evertible cheek plates.; rounded spots that do not cover
more than one plate along the body; head depth 67.0-72.7% of
HL; cleithral width 35.2-38.0% of SL; distance between posteromedial
margin of supraoccipital and dorsal-fin origin 6.7-9.2% of SL;
anal-fin spine length 11.9-13.8% of SL; peduncle depth 12.5-14.2%
of SL; and internares distance 12.7-16.6% of HL.
Aquarium care: The Pseudancistrus genera are
not the easiest to maintain in the aquarium as they will need
pristine water conditions with well filtered water which should
not be too hard. Warm water should be the norm. Adult males
are very territorial and will not get on with other large Loricariid
catfish. Sexual differences: Males have a broad
head and posses long bristles along the edge of the snout. Diet:
Aufwuch grazer, mainly vegetarian,
with lettuce, spinach, cucumber and courgette (zucchini), vegetarian
flake and tablets. Will eat other foods also such as insect
larvae, zooplankton and soft wood but will need to be kept on
a mainly green diet. Remarks: The Rio Tapajós,
and Rio Tracuá where P. zawadzkii occurs are
clear water rivers, varying from medium to large size, with
rocky outcrops forming small waterfalls and substrates of rocks
and sand. |
Common
Name: |
L321 |
Synonyms: |
None |
Family: |
Loricariidae
ycipitidae |
Distribution: |
South
America: Rio Tapajós and rio Tracuá of
the rio Tapajós basin in Brazil. |
Size:
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12cm. (4¾ins) |
Temp: |
25-29°c
(77-85°f.) |
p.H. |
6.0-7.0 |
Reference: |
Seidel, I. 2008.
Back to Nature guide to L-catfishes, Ettlingen, Germany 208
p
Da Costa E Silva, G. de S., F.F. Roxo, R. Britzke and
C. Oliveira, 2014. New species of the Pseudacistrus
barbatus group (Siluriformes, Loricariidae) with comments on
its biogeography and dispersal routes. ZooKeys 406:1-23.
Froese, R. and D. Pauly. Editors. 2015.FishBase.
World Wide Web electronic publication. www.fishbase.org, ( 08/2015
) |
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