COMPARATIVE STUDY OF SOME INDICES AND BODY COEFFICIENTS OF SILURUS GLANIS AND CYPRINUS CARPIO IN DIFFERENT STAGES OF DEVELOPMENT

The purpose of this paper is a age comparative analysis of indices and body coefficients (profile index, the Kiselev index, sarcous index and Fulton coefficient) for two species of cultured fish (Cyprinus carpio and Silurus glanis). These coefficients may be used to characterize morphologically a stock and also to appreciate the degree of normality or the physiological control offish, especially for their selection. The highest physiological condition (pathophysiological) was obvious for carp specimens, the highest value recorded was at the age of two. The sarcous index, expressed by the head proportion from the standard body length for all stages of development examined, the lowest recorded was for Silurus glanis individuals, which represents a greater sarcous for them. Comparing the index values and the coefficients body analysis it was noticed that fish have developed smoothly and showed a good maintenance condition.