Fish - Wikipedia
WEBA fish (pl.: fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits. Fish can be grouped into the more basal jawless fish and the more common jawed fish , the latter including all living cartilaginous and bony fish , as well as the extinct placoderms and ...
Fish | Definition, Species, Classification, & Facts | Britannica
WEB3 days ago · Fish, any of approximately 34,000 species of vertebrate animals (phylum Chordata) found in the fresh and salt waters of the world. Living species range from the primitive jawless lampreys and hagfishes through the cartilaginous sharks, skates, and rays to the abundant and diverse bony fishes.
Fish Pictures & Facts - National Geographic
WEBFin fish like salmon have gills, are covered in scales, and reproduce by laying eggs. Eels, by contrast, have worm-like bodies and exceedingly slimy skin. Lungfish gulp air.
Fish: Different Types, Definitions, Photos, and More - A-Z ...
WEB3 Jan 2023 · Fish are the most diverse group among vertebrates, with over 33,000 different types of fish species. No one really knows how many different types of fish exist in the world, more are being discovered constantly. We may soon have over 35,000, or even 40,000 known species!
What are fish? - BBC Bitesize
WEBFish come in so many different shapes and sizes, how can we tell what is actually a fish? For a start, fish don't have legs and they live in water. Also, they don't breathe air.
Fish - National Geographic Kids
WEBFish are vertebrates (vertebrates have backbones) that live in water. They breathe using special organs called gills.
Fish - Simple English Wikipedia, the free encyclopedia
WEBFish (plural: fish or fishes) are a group of animals which live in water and respire (get oxygen) from their gills. As a group, they are much older than other vertebrates. The first fish developed about 500 million years ago. [4] Fish used to be a class of vertebrates. Now the term covers five classes of animals that live in the water: Jawless fish
Fish: The Ultimate Guide To Fishes & Fish Life - Active Wild
WEB28 Jul 2022 · A fish is an aquatic vertebrate with fins and gills. The body of a typical fish is streamlined and covered in protective scales. Around half of all known vertebrates are fish, making fish the dominant vertebrate animals on the planet. Fish are found in both salt and freshwater habitats in most parts of the world.
Fish species and physical features | Britannica
WEBfish, Any of more than 30,000 species of predominantly cold-blooded vertebrate s found worldwide in fresh and salt water. Living species range from the primitive lampreys and hagfishes through the cartilaginous shark s, skates, and ray s to the abundant and diverse bony fishes. Species range in length from 0.4 in. (10 mm) to more than 60 ft (20 m).
Fish Portal | Britannica
WEBFishes have been in existence for more than 450 million years, and they have evolved to fit into almost every conceivable type of aquatic habitat, including both fresh and salt waters. Almost all natural...
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