Initial investigations at the DAC focussed on improving the maturation rate of male and female
fish. Hormone therapies were developed which assisted in improving the spawning performance
of the fish. In 1995, a heated, re-circulating, broodstock tank was installed to give greater control
over their breeding cycle. By controlling the temperature in the tank it was possible to advance
and prolong the breeding season, increasing the period of availability of fertilised eggs.