[Contracaecum sp. larvae (Nematoda, Anisakidae) infection in Salminus maxillosus (Pisces, Characidae) in the dam of Termas de Río Hondo, Argentina].

Between 1992 and 1993, ten characid fishes, Salminus maxillosus from Termas de Río Hondo pond (27 degrees 33' S 64 degrees 57' W), Argentina were examined for Contracaecum sp. infection. Larvae were isolated from peritoneum of intestine and piloric ceca of salmonids. Morphological characteristics of larvae are described with optical microscopy and scanning electron microscopy. Morphological comparisons between Contracaecum sp. from S. maxillosus, and Contracaecum rudolphii from freshwater fishes species from Southern Chile and Argentina are given.