I currently have a foot long silver aro and 3 peackbass in my 400 gallon. My LFS I got to all the time, got a return of a foot and half MAYBE 2 foot iridescent shark. He was originally housed with 2 more sharks and a ray. If I scooped him up so he isn't crammed in a little LFS tank. Would he be ok? As well as my silver?