mammalEndothermic, tetrapod vertebrate that lays amniotic eggs and has mammary glands (in females) and hair or fur. ray-finned fishEctothermic fish with a backbone and jaws; endoskeleton is made of bones; have thin, bony fins; one of two types of bony fish.
Beside this, are fish ectothermic?
Fish, amphibians and reptiles belong to a group called ectotherms meaning that these animals do not produce heat to maintaining a constant and normally high body temperature (as is the case for birds and mammals). Instead they rely on the environment and their own behaviour to control their temperature.
Are fish cold blooded?
Cold-blooded animals, like reptiles, amphibians, and fish, become hotter and colder, depending on the the temperature outside. For example, when the sun sets at night, their bodies are cooler because it is less warm outside. When the sun is out, however, their bodies soak up the heat and become warmer.
Do all birds have backbones?
Sponges, corals, worms, insects, spiders and crabs are all sub-groups of the invertebrate group – they do not have a backbone. Fish, reptiles, birds, amphibians and mammals are different sub-groups of vertebrates – they all have internal skeletons and backbones.
Are Aves endothermic?
Birds, also known as Aves, are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.
Do lampreys have tails?
Although lampreys resemble eels, lampreys lack jaws and possess only cartilage. A lamprey’s body has smooth, scale-less skin and two dorsal fins, but has no lateral line, no vertebrae, no swim bladder, and no paired fins. They are also characterized by a feathery fin from their midsection down and under the tail.