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
WEB4 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
WEBAbout Fish. All fish share two traits: they live in water and they have a backbone—they are vertebrates. Apart from these similarities, however, many of the species in this group differ markedly...
Fish - National Geographic Kids
WEBFish are vertebrates (vertebrates have backbones) that live in water. They breathe using special organs called gills.
Fish: Different Types, Definitions, Photos, and More
WEBJan 3, 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!
Freshwater fish facts and information - National Geographic
WEBAnimals. Reference. Freshwater Fish. Nearly half of all fish species live in fresh water, which means they swim in the rivers, lakes, and wetlands that make up less than 3 percent of Earth’s...
Fish: The Ultimate Guide To Fishes & Fish Life - Active Wild
WEBJul 28, 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 vertebrates found worldwide in fresh and salt water. Living species range from the primitive lampreys and hagfishes through the cartilaginous sharks, skates, and rays 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
WEBHome Science Birds, Reptiles & Other Vertebrates Fish. Fishes 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.
What is a fish? - Understanding Evolution
WEBPhoto of Paedocypris progenetica by Sophia (CC BY-NC-ND 3.0); whale shark photo by Julie Edgley (CC BY-SA 2.0). The cyprinid fish (8mm) and the whale shark (12m) are some of the smallest and largest fish in the sea. At first, this might seem like an easy question to answer, but it is difficult to define what makes a fish a fish because there is so much …
Skip to content