ok i have a 29 gallon brackish water tank and the sg is about 1.006 as of now. i am increasing it daily. i ran bio-spira in the tank to jumpstart the cycling process. i've got great filtration and a nice penguin 660 powerhead. plenty of cover for the fish to go into (some decor caves at the bottom). my question here is i know that GSP are supposted to be aggresive fin nippers, mine does not seem to be he's about 1 1/2 inches long and he will eat out from my fingers and has been in the tank with a black molly and now my mono argenteus is following my GSP everywhere like swimming buddies. my GSP seems to enjoy the company and they even get 1/4 inch from each other and seem to just swim around. do i still need to worry about my GSP hurting him or do you think they will be ok. i have a 75 gallon put on lay-a-way until i get my taxes back. so size isn't a problem when they grow up. btw my mono is about 2 inches now