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European fish with spiny dorsal fins and mobile jaws?
The European fish you are referring to is likely the European Sea Bass (Dicentrarchus labrax). It has spiny dorsal fins and jaws that can move to catch prey. It is a popular game fish and is known for its strong fighting ability.
Why are fish from the class Agnatha considered primitive?
Agnatha means 'no jaws', and they really don't have jaws, although they do have teeth. They also have no stomach, and no boney skeleton. Their skeleton is cartilagineous, like the elasmobranchs.
What are the differences between jaw less fish and cartilaginous fish?
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.
Is a clown fish a jawless fish?
Clown fish do have jaws, so they are not a jawless fish.
What is the main difference between Agnathans and Chondrichthyes?
The main difference between Agnathans (jawless fish) and Chondrichthyes (cartilaginous fish) is the presence of jaws. Agnathans lack jaws, while Chondrichthyes have well-developed jaws. Additionally, Agnathans have a cartilaginous skeleton, while Chondrichthyes have a skeleton made of cartilage.
What are two ways the cartilage fish are more advanced than the jawless fish?
cartilage fish have paird fins and jaws and they have bones. jawless fish have no paired fins and jaws and they have no bone Cartilage fish = sharks and rays Jawless fish = hagfish and lampre
What classes of fish lack paired fins and jaws?
Myxini, the hagfishesLampreys are as well, but their class has not been determined.
How flexible are shark's pectoral fins compared with fish's pectoral fins?
jaws is a movie about the sharks
What are the charaictics of a jawless fish?
Jawless fish have a cartilaginous skeleton and a sleek, eel-like body with naked skin. They do not have paired appendages or jaws. They have a dorsal nerve cord that leads to a distinct brain. Median fins are present.
What is the name of a European fish with a deep compressed body spiny dorsal fins and massive mobile jaws?
Zeus faber, John Dory
What do jawless fish look like?
Jawless fish have slim, eel-like bodies without scales. They have median fins but no paired appendages. They have no jaws, so they generally resemble tubes. Hagfish and lampreys are examples of jawless fish.
European fish with spiny dorsal fins and mobile jaws?
The European fish you are referring to is likely the European Sea Bass (Dicentrarchus labrax). It has spiny dorsal fins and jaws that can move to catch prey. It is a popular game fish and is known for its strong fighting ability.
What group do jawless fish belong to?
Jawless fish belong to the group known as Agnatha. This group includes species such as lampreys and hagfish, which are characterized by the absence of jaws and paired fins. Agnatha is considered one of the most primitive classes of vertebrates, and these fish have a unique, elongated body structure and a cartilaginous skeleton.
Why are fish from the class Agnatha considered primitive?
Agnatha means 'no jaws', and they really don't have jaws, although they do have teeth. They also have no stomach, and no boney skeleton. Their skeleton is cartilagineous, like the elasmobranchs.
What are examples of agnatha?
Examples of agnatha, or jawless fish, include lampreys and hagfish. These fish are characterized by their lack of jaws, paired fins, and scales. They are considered primitive vertebrates and play important roles in marine ecosystems.
What are the differences between jaw less fish and cartilaginous fish?
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.
What were first fish like?
The first fish were tiny, only about an inch long, had no jaws or teeth, and no fins. They did have spinal columns, though. An example is Haikouichthys.
