I've just bought a 50 gallon tank and i'm planning on moving my 2 firemouths in there, any suggestions on suitable tankmates? I was thinking it might be nice to add some more firemouths and catfish but would like some other cichlids too. Also, how do i tell if my firemouths are male or female? One is bigger than the other but both have similar colouring, the biggest is around 3 inches, the other slightly smaller. Both are greyish with dark stripes and orange throats, both have irridescent blue spots but one does seem more dominant than the other.
the blue acras will bully the firemouths, but not overly, just enough to keep them in their place. convicts are just plain mean, but lovely fish. the angels and the firemouths get on fine. calling a pictus aggressive seems a bit hard, it may well eat a fish that is small enough, but it is often as surprised as the fish it eats when it happens.
silver dollars would work too, but be warned if you have a acara, silver dollars can suffer very badly.
male and female firemouths look quite different, take a look on a google to see what i mean
finally you have a 50 gallon tank, firemouths reach over 6 inches, the blue acara reach over seven, a pictus cat again over 7 inches, silver dollars often over 5 and a bristlenose getting into the same size range.