What makes a actinopterygii?
Actinopterygii (ray-finned fishes) Fins supported by rays of dermal bone rather than by cartilage. A group of jawed fishes so diverse that no single definition for them can be derived; better understood by determining the distinctive characters of the primitive members and then tracing their…
Do actinopterygii lay eggs?
They use fins to help them swim, and they breathe underwater with gills. The gills are usually found in one or more slits in the skin behind their heads. Some fish lay eggs, while others give birth to live babies.
What are class actinopterygii organisms?
Classification
- Polypteriformes (Bichirs, Reedfishes)
- Acipenseriformes (Sturgeons, Paddlefish)
- Lepisosteiformes (Gars)
- Amiiformes (Bowfin)
- Osteoglossiformes (bony-tongued fishes)
- Hiodontiformes (mooneye, goldeneye …)
- Elopiformes (ladyfishes, tarpon … )
- Albuliformes (bonefishes)
How many species are in actinopterygii?
27,000 species
Diversity and Lower Taxonomy: The subclass Actinopterygii comprises some 27,000 species of ray-finned bony fishes, making it the largest radiation of any vertebrate group.
What are class Actinopterygii organisms?
How many species are in Actinopterygii?
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.
What is the taxonomic relationship between actinopterygii and Neopterygii?
Neopterygii (from Greek νέος neos ‘new’ and πτέρυξ pteryx ‘fin’) is a subclass of ray-finned fish (Actinopterygii)….Neopterygii.
| Neopterygii Temporal range: | |
|---|---|
| Phylum: | Chordata |
| Class: | Actinopterygii |
| (unranked): | Actinopteri |
| Subclass: | Neopterygii Regan, 1923 |
How many species are in the actinopterygii class?
The ray-finned fishes (actinopterygians) are the largest group of living fishes and compose half of the living vertebrates. There are around 42 orders, 431 families and nearly 24,000 species. Almost all fish that you see belong to this class of fish.
What is the taxonomic relationship between Actinopterygii and Neopterygii?