They were about 2 inches when I got them and I use to keep a common With them but he quickly outgrew the tank he is 7 inches now the telescope eye is 4 and a half the shubunkin is about 5 and a half and the common is about 7 inches long hey are in a small 14 gallon because I got them when I had just learned about fishkeeping I think they are going to be in the 50 gallon within a month exept for the common