Dec 21, 2025 · 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 …

In English, the plural of "fish" is fish when referring to individuals and fishes when referring to species. Most fish are cold-blooded, their body temperature varying with the surrounding water, though some …

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 from one...

May 21, 2024 · Fish are aquatic vertebrates that typically have gills, fins, and a streamlined body. They inhabit diverse environments, from freshwater rivers and lakes to salty oceans and deep seas. Fish, …

Ichthyology is the study of fishes. Fish are the most numerous and diverse vertebrates on earth, with an estimated 36,000 species known to science and thousands of species yet to be discovered and …

There are more than 32,000 described species of fishes, more than all the amphibians, reptiles, birds, and mammals combined. Fishes are an important food resource worldwide, and fishing pressure has …

Fishes have a wide range of diets, including plankton, algae, fish, seals, and turtles. Some fishes are parasites, some are blind, some are venomous, and some can even produce electricity.

Feb 13, 2018 · Fish biologists have described more than 30,000 species of fish in the world. Visit NPSpecies to see what species of fish are found in national parks. Scientists classify fish into two …

"Kinds of Fishes" introduces you to nearly half of all living vertebrates on Earth. It covers the diversity of fishes and the rationale for classification. It gives you a sense of the complex interdependencies that …

Fish (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.