Preliminary report on the water quality, ichthyofauna and biometric indices for prussian carp from iezerul mostistea lake, romania

Summarizing so far personal observations dated April 2023 and knowledge among anglers concerning the ichthyofauna of Iezerul Mostistea located in Calarasi County, was established that this ecosystem host 18 edible species. This paper analyzes for the first-time weight-length relationships, Fulton's condition factor and the size structure for Prussian carp in relation to water quality from Mostistea Lake. A positive allometric growth pattern was estimated for Carassius gibelio: TW = 0.0148TL3.3097 (coefficient of determination R-2 = 0.9803), TW = 0.0046SL3.4855 (R-2 = 0.977). The values for length ranged between 7.8 and 21.1 (average 11) cm for TL, 6 and 17.4 (average 8.77) cm for SL, while total weight varied from 5 to 174 (average 23.76) grams. Condition factor ranged between 1.05 and 1.86. Eustrongylides spp. and Philometroides sanguineus were also recorded. Water samples collected from three sampling points were subjected to physico-chemical characterization and based on results water was classified in quality classes. Total hardness values present very significant correlations with electrical conductivity (r=0.8814***) and pH (r=0.9183***). The determined parameters indicated that the water quality is optimal for the development of aquatic organisms.