Influence of salinity on the growth and feed utilization in Liza parsia fry

Liza parsia is one of the euryhaline species of finfish cultivated in the \nlow saline coastal waters of India. Since salinity influences growth and \nfood intake in euryhaline species, an experimental study was carried out \nto determine the effect of salinity levels 5%, to 35%, on growth and food \nconversion in Liza parsia fry. Salinity levels ranging from 5 to 25%, did not \nsignificantly influence the survival (88.3% to 93%) but 30 to 35%, salinity \nlevels provided relatively low survival rates of 79.7 and 78% respectivley. \nUnder the restricted ration (8% of body weight) food intake was not \nsignificantly influenced by salinity. Growth and food conversion rates were \nsignificantly influenced by salinity, levels 15 to 25%, providing the best \ngrowth. This study shows that though L. parsia fry can tolerate salinities \nfrom 5%, to 35%,, levels above 25%, seem to be unfavourable for normal \ngrowth and feed utilization.