Foreshortened Maxilla in Farmed Rainbow Trout (Oncorhynchus mykiss, Walbaum 1792) from Argentina
L. A. Romano *
Laboratory of Immunology and Pathology of Aquatic Organisms, Institute of Oceanography, Federal University of Rio Grande, Rio Grande, Brazil.
A. F. F. de Medeiros
Laboratory of Immunology and Pathology of Aquatic Organisms, Institute of Oceanography, Federal University of Rio Grande, Rio Grande, Brazil.
V. F. Pedrosa
Laboratory of Immunology and Pathology of Aquatic Organisms, Institute of Oceanography, Federal University of Rio Grande, Rio Grande, Brazil.
*Author to whom correspondence should be addressed.
Abstract
Several types of maxilla deformities have been reported in various species of fish. In salmonids, the maxilla deformities are observed with frequency. Here we report eight cases of a rainbow trout, five females and three males, adult, with upper maxilla foreshortening. The specimens studied came from an establishment located in the fish farmer located in the Patagonia, Argentina.
Keywords: Aquaculture, deformities, fish, foreshortened, maxilla