Is this for a prepping food supply? If so, then you may want a self sustaining crop. Crabs and prawns will need to be refreshed periodically.

Fish are the easiest.

4 acre pond 32 ft deep within East Texas (Livingston) timber ranch. Filled (to the top of an almost finished dam) by Hurricane Harvey 9/17. Stocked with FHM, CNBG, RES 10/17. Added 35lbs RSC 3/18. 400 N LMB fingerlings 6/18