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The first record of evolution from fish to other species dates back 500 million years and now there are over 32,000 known species of fish in the world. There are 3 main types of jawed fish that come from their jaw-less ancestors: Bony Fish, Plated Skin Fish, and Cartilaginous Fish.
28 thg 7, 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…
Fish Discover the fascinating creatures that inhabit our vast oceans. These cold-blooded vertebrates have gills, which are specialised organs allowing them to breathe underwater.
21 thg 5, 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 …
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.
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 ...
31 thg 8, 2025 · What is a fish? A fish is any of approximately 34,000 species of vertebrate animals found in the world’s fresh and salt waters. The term fish is applied to a variety of vertebrates of several evolutionary lines. It describes a life-form rather than a taxonomic group.
27 thg 12, 2022 · Fish, diverse and fascinating, inhabit various aquatic environments. This vast group includes familiar species like salmon and cod, as well as exotic ones like angelfish and clownfish.
3 thg 1, 2023 · Instead, there are 3 main classes, groups, or types of fish: bony fish (Osteichthyes), jawless fish (Agnatha), and cartilaginous fish (Chondrichthyes). Fish are the most diverse group among vertebrates, with over 33,000 different types of fish species.
There are three main types of fish: bony fish (Osteichthyes), jawless fish (Agnatha), and cartilaginous fish (Chondrichthyes). Fish breathe underwater using gills to filter oxygen from the water, and have specialized organs called swim bladders that help keep them afloat.
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