Budger (left) and Puree (right), Budger is the one on the left with a budge on his head. Puree on the other hand is lighter blue. These two are turquoise males. They are about 5 inches in length when I got them. They love pushing each other around. You know the "you push my mouth and then I push yours"? It's like a seesaw game, back and forth poking each other. In the beginning, none of these two would back down, therefore they "controlled" different territory. Each fish cannot trespass the others area. Soon Budger the obviously larger sized party became the supreme commander of my 4 feet tank. Both are males if you didn't know. Haha... Who wouldn't know? They are so territorial.