Conformation features of three-year old rainbow trout (Oncorhynchus mykiss) breeding stock from a trout farm.

Prior knowledge about correlation coefficients between major somatic characteristics can be used to guidebreeding programmes in aquaculture. The purpose of our research was to characterize the Rainbow Trout(Oncorhynchus mykiss) breeders from a phenotypical standpoint and to test the existence of correlations that canbe used in future research studies. Somatic and gravimetric measurements have been performed on 3-year oldfemales and males, obtained and raised in a regional fishery. Significant difference (646.11 g; p 0.05). The outcome values reflect a higher interdependence between some studied characteristics in males, ascompared to females, as indicated by Pearson’s correlation coefficients and open the direction in which the realselection can be done.