So I picked up 2 mono argentus a few weeks back and the monos are doing great I've read they prefer to be kept in schools my question is weather or not they would school with some mono sebae my LFS just got some in and I would really like to pick up 2 of these guys their about the same size would this work?? Also what would be some other good tank mates in a 120 that's what I plan to place them in once their to big for my 55 I was thinking maybe a couple green Scats or maybe a pair of archerfish, a BW moray eel would be cool or even some Colombian sharks would any of these work?? Idk throw out any ideas or suggestions, also just kinda wondering why would my green scat have died he was about the size of a half dollar when I got him,I picked him up when I got the monos he never looked right and kinda swam on his side once we got home but he ate fine and even chased other fish away from his corner he claimed any ideas why he passed? Just wondering I really don't feel like paying 25 dollars a peice for any more of their just gonna die also. Oh btw the water conditions were fine my tank had been cycled and my sg. Is at .008