I went to petco to pick up a couple of thing s and they had tire track eels so i bought one for $11... what do other tire track owners feed theirs? and what is the growth rate of them i have had spiny eels before so i know their general care but have never been able to get my hand s on one of these till now he is only about 5" long i cant wiat untill hes over 2' and as thick as my wrist......