A fish 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 …

Oct 18, 2022 · The plural of fish is usually fish. When referring to more than one species of fish, especially in a scientific context, you can use fishes as the plural. The zodiac sign Pisces is also …

Oct 28, 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 …

Learn all about Fishes - what is a fish, their evolution, anatomy, characteristics, life cycle, adaptations, and much more - with pictures.

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...

The fishes is the most diverse group of vertebrates on the planet; (the other vertebrates are the mammals, amphibians, reptiles, and birds). With over 35,000 living species of fishes, often it can be …

Jul 28, 2022 · The ultimate guide to fishes & fish life, including definition of a fish, fish bodies, types of fish and the life-cycle of a fish. Read on for a complete guide to ichthyology…

Sep 25, 2025 · Fishes (class Pisces) are an incredibly diverse superclass of cold-blooded, aquatic vertebrates distinguished by a streamlined body, fins for propulsion and steering, and gills for …

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 …