Pariosternarchus amazonensis: a new genus and species of neotropical electric fish (Gymnotiformes : Apteronotidae) from the Amazon River

    Authors

    J. S. Albert;W. G. R. Crampton

    Comments

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    Abbreviated Journal Title

    Ichthyol. Explor. Freshw.

    Keywords

    TELEOSTEI; BRAZIL; BASIN; Marine & Freshwater Biology; Zoology

    Abstract

    Pariosternarchus amazonensis, new genus and species, is described from the Amazon river of Brazil and Peru. It is unique among apteronotids in possessing a wide head that is flattened on its entire ventral surface, and in possessing highly expanded mandibular laterosensory canals. The phylogenetic position of Pariosternarchus is hypothesized by inclusion in a previously published data matrix of osteological and other morphological characters. Among apteronotids Pariosternarchus is inferred to be the sister taxon to Sternarchella, with which it shares several derived features associated with a life history as benthic foragers in large whitewater Amazonian rivers: a short gape, a large maxilla with a robust anterior process, gill rakers attached to gill arches, and flexible gill rakers that are not ossified to their tips.

    Journal Title

    Ichthyological Exploration of Freshwaters

    Volume

    17

    Issue/Number

    3

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    267

    Last Page

    274

    WOS Identifier

    WOS:000242194500009

    ISSN

    0936-9902

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