Help Please

[Muske]

Yea, a 55 is really pushing it w/those fish, unless its a grow out.

 

[ShadowStryder]

FH will own the oscar and eventually kill. Remove O.

 

[Headrush]

good advice

Now was your plan to have a tank for the FH alone and use the 55 for a couple pair of Firemouths? That'd work out nicely, but the FH, FM, and Oscar won't co-exist in a 55. I'd take the Oscar back, get the FH his own tank, and add a few FM's to your 55 making it a species tank

You'll need at least a 75 and better off with a 90 just for the FH

Time to work on a plan

Good luck