Effects of salinity on growth and survival of square head climbing perch (Anabas testudineus) in the early juvenile to juvenile stage
Abstract
This study was conducted to assess salinity adaptation of square head climbing perch . Fish with average body weight of 1.5g were selected to rear at the salinities of 0 ‰ , 5 ‰ , 10 ‰ and 15 ‰ . Fish were cultured in tanks (1 m 3 ) with the density of 200 individuals/tank. The growth and survival of fish were examined every 10 days. The results showed that fish well grew at both salinity of 0 ‰ and 5‰ while its growth gradually decreased with increasing the salinity from 10‰ to 15‰. Survival rate of fish was from 86,67% to 95,67% and its highest values were obtained at the salinity of 0‰ and 5‰. Based on the results of this study, it can be believed that despite different growth and survival of fish between the experimental salinit ies, in general square head climbing perch can well adapt to the salinity range of 0 -15‰, especially at low salinity (≤5‰).