can you eat siamese fighting fishWatch them!It is commonplace for one of them to attack and check out to kill the other. It is not always the male that tries to kill the female. The combating fish is a nest breeder. The male builds a nest of bubbles on the floor of the water. Then he entices a feminine to go under the nest with him. They wrap their bodies round each other, and the feminine releases her eggs while the male releases his sperm to fertilise them.