So since clearing some room in my tank i was thinking about adding something. The lfs suggested a jade goby. They said with frequent water changes it cn reach a size of 12-14 inches but a foot more likely but they will have alot of mass to them. The said that even though it doesnt have teeth it will probly pic on my wolf fish mainly due to the fact that my wolf isnt all that aggressive and he eats from my and just about everyday. He is very gentle. The jades they have are only 3 inches now so he will go in my 30 gallon for a while. My fiances father has one thats about 8 inches and thick.