I've got 3 of these guys in my planted Evolve 4. They're really peaceful and fun to watch. In the morning they chill out under the leaves of my anubias or on top of the bigger leaves and during the day they race up and down the front of the tank and scavenge the bottom constantly. I knew they were supposed to be tiny, but they are TINY. Mine are barely the length of my nail on my thumb. Surprisingly enough they seem pretty hardy too for such a small fish. Great for nano tanks.