Six critically endangered Mekong giant catfish — one of the largest and rarest freshwater fish in the world — were caught and released in Cambodia recently in just a few days, offering new hope for the survival for the species.
require a relatively large area, including water plants and reeds in your dam, but you will end up with a highly productive ecosystem that can stand alone and provide a lot of benefits, including the fish. I would start of with a few fingerlings of tilapia, carp and catfish in the dam...