Jason_S;3027314; said:From this pic I don't think there's going to be anyway to tell for sure. Could be:
jack dempsey
rainbow
archocentrus centrarchus
Amphilophus lyonsi maybe
What it's not:
acara <south american>
oscar <south american>
flowerhorn <hybrid...not a naturally occurring species>
where the naturally occuring species is from is irrelevant. fish have been let go in eco systems that they dont belong in for decades. look at the USA with snakeheads or places like florida with people fishing jags out the water.
you cant just dismiss it. Im sure the USA and UK arent the only places with a non-native species problems.