Dianema
Roberto E. Reis
- Dianema longibarbis
- Dianema urostriatum
Type-species: Dianema longibarbis Cope, 1872.
See the Complete Catalogue for authorships, synonyms, type-localities,
and references.
Diagnosis
Dianema is diagnosed by the first infraorbital bone not articulating with the lateral ethmoid; metapterygoid with an interdigitated suture with the quadrate; and lower lip with two small barbels on each side. In addition to these features, Dianema shares with Corydoras hastatus and C. pymaeus the habit of swimming in midwater, far from the bottom.
Distribution
The two species of Dianema share approximately the same distribution, and are found in the rio Amazonas and lower courses of its tributaries.
Key to the Species of Dianema
- 1a. Caudal fin with horizontal black stripes .....Dianema urostriatum
- 1b. Caudal fin plain, without horizontal black stripes .....Dianema longibarbis
Title Illustrations
| Scientific Name | Dianema longibarbis |
|---|---|
| Location | Genaro Herrera, Loreto, Peru |
| Image Use |
 This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
|
| Copyright |
© Roberto E. Reis
|
About This Page
Roberto E. Reis
Museu de Ciências e Tecnologia da PUCRS, Porto Alegre, Brazil
Page copyright © 1996 Roberto E. Reis
Page: Tree of Life
Dianema .
Authored by
Roberto E. Reis.
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- First online 29 April 1996
- Content changed 29 April 1996
Citing this page:
Reis, Roberto E. 1996. Dianema . Version 29 April 1996 (under construction). http://tolweb.org/Dianema/15337/1996.04.29 in The Tree of Life Web Project, http://tolweb.org/
