Sho-Nuff

Well today i rearranged my 30 gallon cause i have adding a new fish. I got a silver tipped shark, also known as the silver tipped catfish. Its been doing really well, and im quite proud of it too. My rainbow shark has stopped bulling for the day also, and that's a relief. I thought i was going to have to put him in my 20 gallon by himself. The guy at the pet store said that the rainbow shouldnt be aggressive, but i think they are. I think they're just as aggressive as the redtails, and my redtail is quite peaceful.