what is a fun fish i could add to a 20 gallon high? i've got 20-25 pounds of live rock and a 2 inch sand bed. whatever fish goes in would be rooming with a ~12 inch moray. before this tank went marine it was brackish and the moray lived with a puffer, 2 rainbowfish, and a couple bumblebee gobies for over 8 months. judging by this i think his compatibility with other fish would be pretty safe, but you never know. i wanted to do a mini-predator tank, but i don't know any mini-predators. i also don't want any fish that i have in my 46 gallon, such as a firefish, clown, six-line, or pseudochromis. any ideas?
