its a 7 feet tank. i know its small but when i feel they are not comfortable. ill give them away. i don't like torturing animals. so when they get bigger ill give them away and buy something else. so that means no silver dollars. got it ill do something. ill go to the local fish store of Wednesday 23rd of July, buy a good combination of fish and then ill post the pictures. u guys stay in touch. will a alligator gar work with these fish if i exclude the koi?So Mustafa,what size tank or pond are you working with for these fish?