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Jawless fish and cartilaginous fish have cartilaginous skeletons, and bony fish have skeletons made from bone. Cartilaginous fish and bony fish both have jaws, paired appendages, and whole vertebrae, and jawless fish lack jaws, paired appendages, and often are without whole vertebrae. Cartilaginous fish can have scales or be naked, jawless fish are naked, and bony fish have scales. Bony fish have swim bladders, and cartilaginous fish do not. Jawless fish, cartilaginous fish, and bony fish all have fins, gills, and dorsal nerve cords that lead to a distinct brain. They all also have postanal tails and notochords.
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What is the skeleton of a jaw less fish made of?
The skeleton of jawless fish, such as lampreys and hagfish, is primarily made of cartilage rather than bone. Cartilage is a flexible and lightweight tissue that provides structure and support to these fish without the need for heavy bones.
Are there more then 20000 Species of fish or less than 20000?
Yes there is more! There is 27,000 species of fish! That is amazing.
What is the scientific name of agnathans?
That is the scientific designation for " jaw-less fish. "
What kind of fish lives by the delta fresh water fish or salt water fish?
Both kinds of fish can live in a delta area. The line between salt water fish and fresh water fish seems to be getting blurrier. Sharks and other typically salt water fish are found many miles up stream in rivers that empty into the ocean. It appears that salt water fish adapt better than fresh water fish as the fish found in fresh water are not found out at sea.
What is the difference between a female femur from a male?
The neck of the femur forms a shallower angle with the long axis of the femur bone in a female. Forensic anthropologists have found differences in the measurements of the transverse width and length of the head of the femur between the sexes, and have posulated this application in identifying sex of dismembered murder victims; however, there are significant differences between races also. The femur bone has many raised rough portions, and protubernces for the attachment of muscles, these are usually larger in males due to the greater pull of the attached muscles which are larger.
Are sharks jaw less fish?
No, sharks are not jawless fishes. They are Cartilaginous fishes
What is Bony Fishes?
A bony fish is a fish that has a skeleton made of bone, with less cartilage than a cartilaginous fish. All bony fish can breathe both salt and fresh water. A good example of that is the Pacific salmon.
What do cartilaginous joints do?
Cartilaginous joints are connected entirely by cartilage (fibrocartilage or hyaline).[1] Cartilaginous joints allow more movement between bones than a fibrous joint but less than the highly mobile synovial joint. An example would be the joint between the manubrium and the sternum. Cartilaginous joints also form the growth regions of immature long bones and the intervertebral discs of the spinal column.
Where do cartilaginous fish store their oil?
Cartilaginous fish, such as sharks and rays, store their oil primarily in their liver. This oil helps to provide buoyancy, allowing them to maintain their position in the water column without expending much energy. The oil in their liver is rich in squalene, which is less dense than water, aiding in their ability to float and swim efficiently.
Are shark fins sharp or dull looking?
Well, the sharks fins are not sharp. they are made of cartilage which the shark is mostly made of. Cartilage is what is in your nose and your ears. That is why they bend so easily. Not many fish have cartilage inside them. The fish that do are called, you guessed it, cartilaginous fish. There is also bony fish and jaw-less fish.
Do freshwater and saltwater fish have the same body parts?
Yes. If you wish to get extremely picky they have fundamental differences but basically all fish are more or less the same.
What are some differences between the Inca and Aztec?
The Incas were less violent then the Aztecs
What differences are there between German children?
No more or less than there'd be between children of any nationality.
What are the differences in taste between steelhead and salmon?
Steelhead and salmon are both types of fish that are closely related, but they do have some differences in taste. Steelhead is often described as having a milder and less fishy flavor compared to salmon. Salmon tends to have a richer, oilier taste with a stronger fish flavor. Overall, steelhead is considered to be more delicate in taste compared to salmon.
What are the differences between betta pellets and flakes, and which one is better for feeding betta fish?
Betta pellets are more nutrient-dense and less likely to pollute the water compared to flakes. Pellets are better for feeding betta fish as they provide a balanced diet and reduce the risk of overfeeding.
What three classes of animals are often grouped together as fish?
The three classes of fish are (scientific name/common name): Agnatha/Jawless or No Jaw Chondrichthyes (chon-dri-ik-thees)/Cartilaginous (cart-e-la-ga-nis) Osteichthyes (os-t-ik-thees)/Bony Pronunciation in parenthesis
Why there are differences between svr09Wii and the others versions of other consoles?
idon't know for certain . but there are less matches, less characters, but you can pick what they do.
