helo ive never owned aray before but i wanna get one i have a brand new 200 fully cycled with a monster eheim pro 3 500gal thermo filter. i currently have one 4 inch siver aro in it i wanted to get a 4 orso inch ray perferably smaller breed would love help with specific breeds if u have any in mind and also wanted to do either a small school of rainbows or 2 angles any ideas for other types of fish or conserns? thank you in advance