the stock right now is 2 largemouth bass (12") 1 warmouth (8") and 1 monster paper plate size bluegill from the lake i live on.....i put them in for cycling purposes....cycled it the good old slow fashioned way....ready for some other big fish now......bucket heater works great for $30.....i'm in north florida so i hardly ever need it but it got cold here a few nights so it kept it @ 70 plus