from liveaquaria.com
The Red Coris Wrasse requires a 125 gallon or larger aquarium with a sandy bottom into which it will burrow to sleep, or if it is threatened. Do not attempt to keep the Red Coris Wrasse on crushed coral or similar substrate as they have a poor survival rate on such substrates. When very small, Red Coris are safe with almost any fish that will not eat them, but as they grow, they can become destructive. They should not be kept with invertebrates.