Dolphin knife fish

discussion

Remarks: Synonymy follows Albert (2001) and Cox Fernandes et al. (2002). Redescribed in Cox Fernandes et al. (2002) as Apteronotus hasemani. Sexually dimorphic traits described in Hilton, Cox Fernandes (2006). Treated as a junior synonym of Parapteronotus bonapartii in Triques (2007 a).

Checklist of Gymnotiformes (Osteichthyes: Ostariophysi) and catalogue of primary types

distribution

Distribution: Amazon River basin, Brazil and Peru (Albert, 2003 a).

Checklist of Gymnotiformes (Osteichthyes: Ostariophysi) and catalogue of primary types

materials_examined

FMNH 54562, holotype; FMNH 15199, paratype, 1 ex.; FMNH 15200, paratype, 1 ex.; FMNH 92070, paratypes, 13 ex.; Brazil - MZUSP 6557, 3 ex.; MZUSP 24928, 4 ex.; MZUSP 32203, 1 ex.; MZUSP 44497, 5 ex.

Apteronotus eschmeyeri, a new species of ghost knifefish from the Magdalena Basin, Colombia (Gymnotiformes: Apteronotidae).

materials_examined

FMNH 54562, holotype; FMNH 15199, 1 ex., paratype; FMNH 15200, 1 ex., paratype; FMNH 92070, 13 ex., paratypes; Brazil - MZUSP 6557, 3 ex.; MZUSP 24928, 4 ex.; MZUSP 32203, 1 ex.; MZUSP 44497, 5 ex.

Apteronotus caudimaculosus n. sp. (Gymnotiformes: Apteronotidae), a sexually dimorphic black ghost knifefish from the Pantanal, Western Brazil, with a note on the monophyly of the A. albifrons species complex.