Well since im new to the game compared to you guys with your 200g tanks I only got a 33 g tank with a red belly pyranha,a little crab , 2 sucker fish and a couple of little ones don't know what they are called but anyway what other types are there? like maybe order from "nicest to the meanest". I hope to get a larger tank in the future and get a lot of P's is it recomended to get them as babies and all at once, I tried to add another one to my tank and everything was fine untill I turned the lights out went to bed and woke up to the head of the P I just added floating in the tank? also do you guys use sucker fish to help clean your tank?