sev and FM together?

[klmt]

i was wondering if a severum about 5" long would bother a 4" FM just those two in a 45 hex or 55. like do they bully other fish a lot or are they pretty peaceful.

 

[Quick5oh]

It really depends on the fish and his personality. I have kept sev's and firemouths together in the past with no issues at all in my 55.. But sometimes you get a crazy fish that wants to attack everything in the tank.. I have had both a severum and a firemouth like that... Usually though, sev's are pretty passive as are firemouths.. Just give them some space and visual dividers in the tank.