theres 5 in the tank next to my desk , i just added more live plants . they show up awsome on the black sand. ive had those guys since they were bout 1/2 inch long now some are 1 and 1/4 and ones like 1 and 1/2. the tank may be a little overstocked but i do pwc's 2 or 3 times a week. they got a big ole shell they use as a cave and a bunch of live plants. i think all 6 of us are happy with the arangments. although im adding more plants soon