OMG! Why???? Get a CUC they said! It will be good for your tank they said! It's like a scene from saving private Ryan in my tank right now! Within 15 second of being introduced my wrasse initiated this all out war. He gobbled up an unsuspecting crab as he let out his battle cry with a full belly to gloat! My puffer begins an assault on the tank like nerite snail. Unable to pierce his armor he leaves the large snail alone to be settled during another battle! Next my crab goes for an easy target. One small snail is ripped from his shell like notning! One snail down. Just then my fish smell fresh slime! (Snails don't bleed right?). The wrasse swoops in and grabs the snail meat from the crab. My crabs antenna is no match for the varascious bite of my Valentin puffer. The fish swarm the crab as it lay wounded on the battlefield. OMG I can't watch anymore.