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Sharks and rays belong to a class of animals known as Chondrichthyes (say it : Con - Dree- Ek - theees) which are known as the cartilaginous fishes.
These animals DO have bones, but not bone tissue like ours, their bones are made out of cartilage and do not contain bone marrow like us, so their red blood cells are produced in their spleens. Their teeth which are harder than their caritlage bones are made out of calcified tissue called dentine and hard enamel which would more closely resemble the structure of human teeth but they are not bones in the sense that they are calcified tissue which is a support structure for our bodies.
Other animals in this class which are not sharks or rays are the Chimaeras, which look like a mixture of a shark and a ray, and are also known as Ghostfish, and the Skates which are another weir looking animal which resemble neither a shark or a sting ray.
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Do fish have wish bones?
Yes, fish have bones. Some fish have cartilige (e.g sharks and rays)
How do sharks and rays differ from perch and goldfish?
because sharks are big then rays and perch and goldfish..
What does a Elasmobranchology do?
they study sharks and rays
Are shark dorsal fin a bone?
yes sharks have bones made of cartilage too move and bend more and the rays are made of cartilage as well. Easy for a 10-year old like me!
What is a Bonyfish?
Any fish that has bones. Sharks, lampreys, hagfish, jellyfish, starfish, ratfish, rays, sturgeons, octopus, squid, are not boney fish.
Which fish does not have bones?
Most fish have bones. Sharks and rays do not have bones but they do have bone-like structures that are made from cartilage.
Are sharks and rays bones made of cartilage?
yes
Does halibut have bones?
Yes. Most fish apart from sharks and rays have bones.
Do fish have wish bones?
Yes, fish have bones. Some fish have cartilige (e.g sharks and rays)
What do sharks and rays have in common?
they are alike because they are both living things and they both eat and they both are carnivores
Why are sting rays and sharks not classified as bony fish?
For the most part, they do not have bones. They have cartilage.
Why are sharks skates and rays places in their own class?
because they both don't have bones.
10 animals that don t have bones?
whales,Sharks,snakes,snails and frogs donot have bones
What hard tissue is found in vertebrates?
Bones and cartilage are found in most all vertebrates, with the exception of sharks and rays, which only have cartilage.
What are Sharks and rays are examples of what kind of fishes members of the class Chondrichthyes?
They have cartilage instead of bones for a skeleton. Chondo- means cartilage.
What type of ray has a poison spine by the tip of its tail?
Rays, and sharks, have no bones, so how can any species of ray have a spine which poisons anything?
What is a cartilaginous?
They are fish with no bones, no swim bladder, no scales, and have 5 to 7 open gill slits. These fish include sharks, rays, etc.
