A fish which is interesting from a very different point of view is the Cichlid from the lake of Galilee. These fish have remarkable breeding habits. Mud-skippers lives in tropical mangrove swamps, and spends most of its time out of the water. At any rate those in the Zoo aquarium do so. The mud-skipper has fins, but at least one pair of them has a joint like an ankle, which enables it to use them for a clumsy kind of hopping on land. Its eyes bulge out of its bead, and even move up and down like a frog's. The ant-eater has no teeth at all, the sloth has very few and simple ones, and a very much worse temperature control than most mammals. It might be worth while keeping a few members of these professions if they were as odd looking as ant-eaters or mud-skippers.