What type of fish are in class actinopterygii?
ray-finned fishes
The group of ray-finned fishes (Class Actinopterygii) encompasses over 20,000 species of fish that have ‘rays,’ or spines, in their fins. This separates them from the lobe-finned fishes (Class Sarcopterygii, e.g., the lungfish and coelacanth), which have fleshy fins.
Is Ray-finned fish a class?
The Actinopterygii, or ray-finned fishes, are the largest class of fishes. In existence for about 400 million years, since the Early Devonian, it consists of some 42 orders containing more than 480 families, at least 80 of which are known only from fossils.
What animals belong to the class actinopterygii?
Almost all fish that you see belong to this class of fish. The most notable exceptions include lampreys, hagfish, lungfish, and coelocanths. Ray-finned fish have several physical characteristics worth mentioning.
What species is a ray-finned fish?
actinopterygians
The actinopterygians, or ray-finned fish, are one of the two major clades of bony fish (Osteichthyes), the other being the lobe-finned fish, or Sarcopterygians.
What features are characteristic of actinopterygii actinopterygii are fish that have fins?
Characteristics: The fins are supported by rays, as the name indicates. In contrast to the cartilaginous fish they have a rigid skeleton. The swim bladder is also a unique feature of most ray-finned fish, enabling them to maintain buoyancy as they move up or down in the water.
What characteristics do actinopterygii have?
General Characters:
- Thin and elongated fishes.
- Body is covered by small cycloid scales. Head region is devoid of any scales. Some fishes are scaleless.
- Long dorsal and caudal fins are spineless. Fins may not be supported by fin rays.
- Mouth aperture is comparatively large.
- No accessory respiratory organs are present.
Is salmon a actinopterygii?
The actinopterygians include the most familiar fish, such as sturgeons, gars, eels, carp, herrings, anchovies, catfishes, goldfishes, piranhas, oarfish, seahorses, bass, cichlids, pickerel, salmon, and trout.
Is actinopterygii a phylum?
The vast majority of Actinopterygii (~95%) are teleosts….Actinopterygii.
| Ray-finned fish Temporal range: Late Silurian – recent PreꞒ Ꞓ O S D C P T J K Pg N | |
|---|---|
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Superclass: | Osteichthyes |
| Class: | Actinopterygii Klein, 1885 |
What class do cartilaginous fish belong to?
class Chondrichthyes
Cartilaginous fish in the class Chondrichthyes include the subclass elasmobranchs (sharks, skates, and rays) and the older subclass of holocephalins (chimeras and elephant fish). Cartilaginous fish are the oldest extant jawed vertebrates or gnathostomes.
Is a goldfish an Actinopterygii?
The actinopterygians include the most familiar fish, such as sturgeons, gars, eels, carp, herrings, anchovies, catfishes, goldfishes, piranhas, oarfish, seahorses, bass, cichlids, pickerel, salmon, and trout. …
Is Perch a Actinopterygii?
The yellow perch, Perca flavens, is an actinopterygian. Besides the sharks and their relatives, there are two groups of living fish-like vertebrates, Actinopterygii, the ray-finned fishes, and Sarcopterygii, which includes the lobe-finned fishes and their tetrapod relatives.
What makes a phylum Chordata a ray finned fish?
Phylum Chordata, Class Actinopterygii (ray-finned fishes) Actinopterygii (pronounced ac-tin-op-ter-idge-ee-eye) are the group of animals most people would call a fish. Specifically these are ray-finned fishes because they possess “fin rays”, their fins being webs of skin supported by bony or horny spines on the side of their bodies.
What kind of fish is Actinopterygii from Wikipedia?
Actinopterygii. From Wikipedia, the free encyclopedia. Jump to navigation Jump to search. Class of ray-finned bony fishes. Ray-finned fish. Temporal range: Late Silurian – recent. PreꞒ. Ꞓ. O.
How are actinopterygians classified into the subclasses?
Actinopterygians are divided into the subclasses Chondrostei and Neopterygii. The Neopterygii, in turn, are divided into the infraclasses Holostei and Teleostei. During the Mesozoic and Cenozoic the teleosts in particular diversified widely, and as a result, 96% of all known fish species are teleosts.
What kind of fish are Chondrostei and Neopterygii?
The latter comprised subclasses Chondrostei and Neopterygii. The Neopterygii, in turn, is divided into the infraclasses Holostei and Teleostei. During the Mesozoic and Cenozoic the teleosts in particular diversified widely, and as a result, 96% of all known fish species are teleosts.