If every face tells a story, this one might have a sorry tale to relate about the time a golf ball landed in its pond.
But there’s been no tragic sporting accident here. The enormous swollen forehead of this flowerhorn cichlid is called the nuchal hump, a feature that seems to be involved in mate-attraction.
Cichlid fish are famous for their ability to form new species rapidly, which draws the attention of evolutionary biologists and fish breeders alike.
Indeed, the flowerhorn is a selectively bred product of the aquarium trade, but has been released in several locations around the world and often has invasive tendencies.
