what are the bony fishes? give two examples
Answers
Answer:
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Explanation:
Scientific Name: Osteichthyes, Actinopterygii, Sacropterygii
Common Names: Bony fish, ray-finned and lobe-finned fishes
Basic Animal Group: Fish
Size: From below a half inch to 26 feet long
Weight: Well under an ounce to 5,000 pounds
Lifespan: A few months to 100 years or longer
Diet: Carnivore, Omnivore, Herbivore
Habitat: Polar, temperate, and tropical ocean waters as well as freshwater environments
Conservation Status: Some species are Critically Endangered and Extinct.
Description
All bony fishes have sutures in their neurocranium and segmented fin rays derived from their epidermis. Both bony fish and cartilaginous fish breathe through gills, but bony fish also have a hard, bony plate covering their gills. This feature is called an "operculum." Bony fish may also have distinct rays, or spines, in their fins.
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Answer:
Osteichthyes are bony fishes.
Eg: Ocean sunfish, giant oarfish
Explanation:
Characteristics of Osteichthyes:
- cold-blooded vertebrates
- Some breath through gills
- use fins to swim
- have endoskeleton is bony
- paired fins
- a pair of gill openings
- a pair of nostrils
- scales
- the mouth is terminal with teeth
- they are heterotrophs, omnivores, carnivores and filter feeders
- cloaca is absent
- different genital and anal openings
- the heart is two-chambered. But in lungfishes have three chambered.
- mesonephric kidney
- tail is homocercal
Among vertebrates, Osteichthyes includes the largest number of living species 28,000.
Of all the fishes Osteichthyes accoutn 96%.