Add Yahoo as a preferred source to see more of our stories on Google. Flower Horn Cichlids are hybrid fish with a distinctive bulbous forehead, popular among hobbyists. They are semi-aggressive, ...

Male cichlids that are constantly threatened by predators grow faster and postpone the full expression of conspicuous breeding coloration for longer. This is shown by a study by biologists from the ...

Fish will mate with a species outside their own if the male's colouring is attractive enough or if the female can't see him properly, according to new research. Such 'mistakes' in mate choice can lead ...