i just got a 55 gal tank (yay!) for my room and what i really want to put in it is atleast one pair of kribs... but my mom's tank (which i can't manage to convince her is overcrowded) has a pair of pearl gouramis that i'd like to move downstairs to give them more room. will they work with kribs? there should be plenty of room for them to avoid each other, and i know gouramis tend towards the top and kribs toward the bottom of the tank. i'd appreciate any opinions