Sodium chloride tolerance of grass carp, fingerlings, Ctenopharyngodon idella (Val. 1844).

Abstract

Nine concentrations (1.5, 3, 5, 7, 8, 9, 10, 15, 17 ‰) of NaCl have been used to test the salinity tolerance of grass carp fingerlings Ctenopharyngodon idella. It has been found that salinity 9‰ was lethal to the fingerlings, (Lt50 48h), while all the fingerlings survived in salinity 8‰ during the experimental period (168h.). the present study showed that fingerlings can survive in salinity as higher as 8 ‰.