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Leptodoras
linnelli Eigenmann, 1912
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Image
contributors to this species: |
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ScotCat
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Other
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Relevant Information: |
Recently collected from the Rio
Tiquié basin (right bank tributary of the upper rio Negro)
in the Amazonas State and from the upper Rio Aripuaña
(tributary of the rio Madeira) in Mato Grosso State, Brazil,
extending the known distribution of this species into the western
limits of the Brazilian Shield. Dorsal spines (total): 1; Dorsal
soft rays (total): 6; Anal soft rays: 12 - 16. Upper labial
extension very elongate, straight to weakly curved medially
and nearly uniform in width with a bluntly rounded tip. Differs
further from all Leptodoras except L. acipenserinus
by having an adipose fin extending anteriorly as a low thin
ridge to a point midway between the anterior insertion of the
adipose fin and the posterior insertion of the dorsal fin. Distinguished
from L. acipenserinus by a number of characters including
a relatively longer predorsal distance (35.5-38.7% SL), inner
flap of gill opening incomplete, lower sum of midlateral plates
(74-81), anal-fin shape (tip of longest branched ray falls short
of vertical through tip of last branched ray in extended anal
fin and is more or less even with vertical through base of last
ray; line defined by tips angled anteriorly, forming a 45-90°
angle with long axis of body), pectoral-fin spine length 19.9-26.2%
of SL and pectoral-fin spine dentation with teeth strongly retrorse
along majority of posterior margin, becoming less retrorse distally,
size relatively uniform along distal half, last denticulation
usually subterminal |
Common
Name: |
Elongate Mouse Catfish |
Synonyms: |
Leptodoras acipenserinus, Hemidoras
linnelli |
Family: |
Doradidae |
Distribution: |
South America:
Upper Orinoco (rios Ventuari and Mavaca) and Casiquiare River
basin in Venezuela; Atlantic Coast drainages of the Guianas
and northern Brazil such as Essequibo, Demerara and Araguari);
the rios Uatumã, Tacutu and Demini in Brazil. |
Size: |
23cm. (9ins) |
Temp: |
18-22°C (64-72°F) |
p.H. |
6.0-7.0. |
Reference: |
Froese, R. and D. Pauly.
Editors. 2008.FishBase.World Wide Web electronic publication.
www.fishbase.org, version (02/2009). |
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