hello there i have been given 40 4inch common cold fish and have put them in my pool it has alot of natral food in it and i mean alot plus has fresh water pump in to it every day out of my bore hole its about 8 ft deep and a bit more and half an acer in size mybe a bit bigger will the fish do will in it and how big will these grow in here and how fast plus he has given me 2 siberian sturgeon aswell there about 10-12 inchs long will these do ok as well and how big will these grow and how fast thanks hope u can help me