I have a SnowFlake eel that just keeps getting bigger, right now he's close to 2 foot and about as round as a cigar, when I bought him I was told they only get to be around 1 foot or so, I have him in a 40 wide with a porky puffer, I was going to wait a bit to get a bigger tank for them but the eel is getting massive, He's doing good at this size right now but if he's going to get bigger it's time to get another tank,