Black ghost

distribution

Distribution: Venezuela to Paraguay and Paraná River basins (Albert, 2003 a).

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

Apteronotus albifrons (Linnaeus 1766)

A. albifrons (Linnaeus, 1766) N original Gymnotus albifrons synonyms Apteronotus passan Lacépède, 1800 Sternarchus lacepedii Castelnau, 1855 Sternarchus maximilliani Castelnau, 1855 first record Nion (1998)

Check List of the Freshwater Fishes of Uruguay (CLOFF-UY).

description

Body elongated and compressed; greatest depth contained 5.5 to 6.2 times in TL; head length 5.5 to 6.0, anal-fin base length 1.2 to 1.5, caudal-peduncle length 5.0 to 6.6, preanal distance 6.1 to 7.5 and prepectoral distance 5.5 to 6.0 in LEA; snout length 2.7 to 4.7, horizontal orbital diameter 9.0 to 16.7 and least interorbital width 3.9 to 4.7 in HL. Mouth terminal. Pectoral fin with 15 - 16, anal fin with 170 - 192 and caudal fin with 17 to 20 rays. Transversal series above lateral line with 15 - 16 scale rows (Campo-da- Paz, 1997). Ground color dark-brown, with brownish-white middorsal stripe from tip of lower jaw to nape, continuing as narrower line until about middle of body (occasionally faded or discontinuous); region around branchial aperture, including isthmus, brownish-white; wide brownish-white transverse bar across tail and posterior portion of anal fin; narrower brownish-white transverse bar across posterior portion of caudal peduncle and caudal-fin base. Distal portion of caudal fin brownish white; fins otherwise darkbrown (Graça, Pavanelli, 2007). Maximum total length. 150.0 mm (Graça, Pavanelli, 2007).

Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated

distribution

Distribution. Drainages from Venezuela to Paraguay and río Paraná basin.

Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated