
The Crenuchidae, or crenuchids, are a family of freshwater fish of the order Characiformes. The 11 genera include about 115 species, though several species are undescribed. These fish are relatively small (usually under in standard length) and originate from eastern Panama and South America. Both subfamilies were previously included in the family Characidae, and were placed in a separate family by Buckup, 1998. Buckup, 1993, revised all genera, except Characidium.
South American darters
FAMILY
Crenuchidae forment une famille de poissons d'eau douce appartenant à l'ordre des Characiformes. Cette famille regroupe 12 genres. Les Crenuchidae ou dard de sable d'Amérique du Sud regroupes 12 genres comprennent environ 74 espèces, bien que plusieurs espèces sont non décrites[1]. Ces poissons sont relativement petits (généralement moins de 10 cm (4 po) de longueur standard) et proviennent de l'Est du Panama et de l'Amérique du Sud[1] les deux sous-familles ont déjà été inclus dans la famille Characidae, et ont été placés dans une famille séparée par Buckup, 1998[2]. En 1993 Buckup a révisé tous les genres, sauf les Characidium[2]. Sommaire 1 Liste des genres 2 Galerie 3 Notes et références 4 Références taxinomiques Liste des genres Selon FishBase (04 juin 2015)[3]: Crenuchinae genre Crenuchus genre Poecilocharax Characidiinae genre Ammocryptocharax genre Characidium genre Elachocharax genre Geryichthys genre Klausewitzia genre Leptocharacidium genre Melanocharacidium genre Microcharacidium genre Odontocharacidium genre Skiotocharax Galerie Ammocryptocharax sp Characidium fasciatum Crenuchus spilurus Melanocharacidium sp Poeciliocharax weitzmani Notes et références ↑ a et b (en) J
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The Crenuchidae, or crenuchids, are a family of freshwater fish of the order Characiformes. The 11 genera include about 115 species, though several species are undescribed. These fish are relatively small (usually under in standard length) and originate from eastern Panama and South America. Both subfamilies were previously included in the family Characidae, and were placed in a separate family by Buckup, 1998. Buckup, 1993, revised all genera, except Characidium.
They are the only members of the superfamily Crenuchoidea. They are sister to all other members of the suborder Characoidei, and diverged during the Early Cretaceous, prior to the split between the African characins (Alestoidea) and the other South American characins (Erythrinoidea and Characoidea). This suggests that their divergence likely predates the breakup of Gondwana, when the divergence between those groups likely occurred.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).