Salinity tolerance of grass carp and silver carp during egg and early larval stages

We tested salinity tolerance of grass carp and silver carp eggs and larvae during two phases of development – pre-gas bladder inflation and post gas bladder inflation to the development of the second gas bladder chamber, using 6 different salinity concentrations ranging from 0 to 36 ppt. Growth and developmental rates were also observed after exposure. After the initiation of horizontal swimming, grass carp larvae were tested in a Y-maze to assess any preferences for salinity levels.