Triportheidae
Triportheidae, the hatchet characins, is a family of characiform fishes, including about 23 species. This family was raised from the status of a subfamily to family based on extensive analysis of characiform species.
Fossils of this group date back to the Oligocene, with the fossil species †Lignobrycon ligniticus from Brazil.
Taxonomy
The following genera are placed in this family:- Family Triportheidae Fowler, 1940
- * Subfamily Triportheinae Fowler, 1940
- ** Genus Lignobrycon Eigenmann & Myers, 1929
- ** Genus Triportheus Cope, 1872
- * Subfamily Agoniatinae Bleeker, 1859
- ** Genus Agoniates Müller & Troschel, 1845
- * Subfamily Clupeacharacinae Fowler, 1958
- ** Genus Clupeacharax Pearson, 1924
- ** Genus Engraulisoma Castro, 1981