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Leptodoras
linnelli Eigenmann, 1912
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| Image
contributors to this species: |
| Mark
Sabaj Pérez (1) |
| ScotCat
Sources: |
 
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| Other
Sources: |
 
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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
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| Common
Name: |
None |
| Synonyms: |
Leptodoras acipenserinus,
Hemidoras linnelli |
| Family: |
Doradidae blycipitidae |
| 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:
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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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