I want to start a mantis tank. any suggestions like what size tank? I would like to get a mantis shrimp that I saw atthe aquarium in the living reef. I would like to say it was a peacock but i can't remember it was white and had black spots. it might have been a tiger shrimp but i hope not. what do i feeed it and what type of cleanup crew could i have in their? I don know much about shrimp but i like how they look.