yes
Clown fish do have jaws, so they are not a jawless fish.
yes, jawless fish have no paired fins
Jawless fish have an internal cartelagenous endoskeleton.
Jawless fish breathe from gills.
There are two different types of jawless fish basically, the hagfishes and the lampreys. The larval stages of thse organisms are filter feeders, and eat a variety of plankton. The adult lamprey feeds on fish blood, as they are parasites. The adult hagfish feeds on dead and decaying animal material such as fish or marine mammal carcasses.
In some cultures, jawless fish are a delicacy.
Jawless fish are Phylum Chordata, they are also known as paraphyletic, they still are around today.
Most fish are not jawless. There is a small group of very primitive fish called Jawless fish (Agnatha). However, they make up a very small proportion (<1%) of the fish species on earth. Jawless fish are things like lamprey and hagfish. All other fish, like trout, salmon, tuna, sharks, rays, cichlids, goldfish, etc, etc, have jaws. See the related link for more information on the primitive jawless fish.
No, they are jawless fish.
Both jawless fish and cartilaginous fish have skeletons made of cartilage.
A group of jawless fish is commonly referred to as "agnatha."
Jawless Entelognathus primordialis is the most ancient fish.