Sandcastle-building fish offer evolution clue
Friday, December 6, 2013 - 08:30
in Biology & Nature
(Phys.org) —In Lake Malawi, East Africa, there are around 200 different species of cichlid fish that once or twice a year build large sand structures (known as bowers) on which the fish mate. Each different species constructs a bower which is subtly different to that of other species. The males then defend their 'sandcastle', hoping to attract the attention of the opposite sex.