Photo by Britt Griswold
Reproduced from Vari, Ferraris and de Pinna (2005).
Paracetopsis Bleeker, 1862
Paracetopsis can be distinguished from all other genera in the Cetopsinae by the combination of the possession of a vomerine tooth patch with two or more rows of teeth and a medial gap between the contralateral components of the tooth patch.
KEY TO THE SPECIES OF PARACETOPSIS
| 1. | Dorsal profile of body without distinct notch at rear of head in area of contact of posterodorsal portion of externally obvious jaw musculature and anterior portion of epaxial musculature | Paracetopsis esmeraldas |
| Dorsal profile of body with distinct notch at rear of head in area of contact of posterodorsal portion of externally obvious jaw musculature and anterior portion of epaxial musculature | ||
| 2. | Pelvic fin extending posteriorly to completely overlap vent and nearly reaching to anal-fin origin; vomerine teeth with medial gap equivalent to width of 1 or 2 vomerine teeth | Paracetopsis atahualpa |
| Pelvic fin extending posteriorly to barely reach anterior limit of vent and falling distinctly short of anal-fin origin; vomerine tooth row with medial gap equivalent to width of 3 or 4 vomerine teeth | Paracetopsis bleekeri |