My Vieja synspila (redhead cichlid?) is about 3-4". The tail fin is starting to get shades of red and the tail is turning a little yellow with the rest of the fins a very light blue, but everything else is still whitish silver except for the black bar coming about halfway to the front of the body. Every picture that I see of them shows them to have bright red heads and bright yellow on the back.
When to they show these colors?
It is a 55 with 2, 3" JD's 2, 3" firemouths and 2 cory's. (I know the tank will soon be overstocked.) It is the boss of the tank and does keep the others away from where ever it is.
Is this Normal? Are they this aggressive?
Is it possible to keep a breeding pair of firemouths in a 33 gallon if it has tons of filtration?