hey everyone. i have a lawnmower blenny already in my tank. he is only about 2 inches now. has been in the tank for about a month. the tank is 72X18X20. i want to add a cannary blenny. do you think they will get along. i know the cannary is venomus, so thinking if the lawnmower goes for it, it will only be till the cannary bites him one time. not sure if the cannary will go after the lawnmower after that though or vise versa.