Vintage Boots: 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.