Breeding tank

A breeding facility for fish and like marine life comprising a plurality of intercommunicating tanks arranged in interconnected relation to one another in a predetermined relation so as to establish a successive flow or path of travel of marine life through each of a predetermined number of the tanks. An interconnector access apertures and flow regulator are mounted or connected in corresponding and predetermined location relative to the access apertures of each of the tanks such that these tanks may be selectively opened for fluid communication therebetweeen or closed off to prohibit flow of marine life therebetween. One or more of the tanks may have specific strengthening member, and specific configurations to provide ready access between the tanks, drainage of the tanks when desired and permanent or temporary disposition of the tanks in a stacked or non-stacked relation to one another. Supplementary containers may be mounted within one or more of the tanks to allow for separation of live breeding adult fish from the fry after birth and further separation of the fry and/or adult fish through the cooperative structure of the supplementary container and the flow regulator which allows flow of the marine life between tanks in a single direction only. One or more of the containers are further adapted to have collectors attached thereto for gathering of either the adult breeders or the resulting fry from live breeders or hatched eggs.