i am close to getting a new cage i was suposed to be buying one tomorrow with the money i made today but...i made no money today.He is 20 inches long .My concern was not about them like...fighting between the glass or anythingthe crabs hide all day , it was more like health stuff like i didnt want to transmit anything to him.The pictures were all the same size and since one worked the others should have too...but they didnt