Fish - Wikipedia 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 jawed fish, the latter including all living cartilaginous and bony fish, as well as the extinct placoderms and acanthodians In a break from the long tradition of grouping all fish into a
Fish | Definition, Species, Classification, Facts | Britannica 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
What is a fish? - Understanding Evolution 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 diversity among animals that we consider to be fishes
Fish Pictures Facts | National Geographic 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
Fish – Definition, Examples, Characteristics Fish have a range of adaptations that allow them to thrive in aquatic environments These adaptations help them to move efficiently, breathe, find food, avoid predators, and reproduce Here are some key adaptations: 1 Body Shape and Streamlining
Fish: Different Types, Definitions, Photos, and More - A-Z Animals 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!
Kinds of Fishes "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 exist between anatomy, lifestyle, and success of species
Fish: Classification, Types, Characteristics Feeding Habits 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 respiration