Thought it was time I made another post. I've just drained my syno tank to sex and check the fish. Its a 1000l tank with 3 x S. decorus, 10 x S. eupterus, 11 x S. njassae and 9 x S. multipunctatus. I've got the SL's for the fish and canulation results somewhere. I tell you what though the smallest oocyteswere the S. eupterus with the S. njassae have the next biggest oocytes with the S. multipunctatus having oocytes about twice the size of the S. eupterus.
Adam