Tuesday 14 August 2012

Hyphessobrycon

Hyphessobrycon

This large genus of characins includes over 100 species.[1] The systematics of Hyphessobrycon is still largely unresolved.[2] Six groups within this genus have been recognized based on color patterns alone.[1] With no phylogenetic analysis of this genus, species are placed into this genus as anatomically defined by Carl H. Eigenmann in 1917.[3] By this definition, Hyphessobrycon is identified by the presence of an adipose fin, incomplete lateral line, two tooth series in the premaxilla, with the teeth of the external series continuous in a single series, teeth not strictly conical, preventral scales arranged in more than one row, and lack of scales in the caudal fin.[3] The characteristic of extension of scales onto the caudal fin that differentiates.

Hyphessobrycon

Hyphessobrycon

Hyphessobrycon

Hyphessobrycon

Hyphessobrycon

Hyphessobrycon

Hyphessobrycon

Hyphessobrycon

Hyphessobrycon

Hyphessobrycon

Hyphessobrycon

Hyphessobrycon

Hyphessobrycon

Hyphessobrycon

Hyphessobrycon

Hyphessobrycon

Hyphessobrycon


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