Title

Revision Of The Deep-Channel Electric Fish Genus Sternarchogiton (Gymnotiformes: Apteronotidae)

Abstract

The Neotropical ghost knifefish genus Sternarchogiton is revised on the basis of morphology and pigmentation. A new diagnosis for the genus is provided. Two new deep-channel taxa from the lowland portions of the Amazon basin are described: S. labiatus and S. preto. Sternarchogiton labiatus is diagnosed by the possession of a hard, prominent, three-lobed structure on the lower lips, two rows of teeth on the dentary, a second hypobranchial with a medial bridge, an ossified first basibranchial, and cartilaginous posterior basibranchials. Sternarchogiton preto is diagnosed by black or very dark brown body coloration, five long and conical teeth on the premaxilla, a dentary with one row of conical teeth pointing toward inside of mouth, the fusion of the supracleithrum and posttemporal, and anterior portion of coracoid not reaching anterior edge of cleithrum. A dichotomous key to species of the genus is provided. © 2007 by the American Society of Ichthyologists and Herpetologists.

Publication Date

5-16-2007

Publication Title

Copeia

Issue

2

Number of Pages

387-402

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1643/0045-8511(2007)7[387:ROTDEF]2.0.CO;2

Socpus ID

34547411496 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/34547411496

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