07/04/2022
They feed on crustaceans, mollusks, roundworms and other benthic invertebrates, to a lesser extent fish. Echinoderms. Embryos that develop in the mother's body in addition to feeding the egg yolk receives a nutritious fluid rich in protein. This fluid is secreted by special growths in the walls of the uterus. The bundles of such growths pe*****te the embryos and the fluid enters their digestive tract immediately.