Below are pictures of the real fish (even though one of them is referred to as “perch”), as well as links to additional information. Many fish called “bass” are sunfish rather than basses, such as largemouth and smallmouth Sunfish. Here, we enlisted some varieties of fish one by one below. The primary name is recorded here when it corresponds to names in the fish markets, and Fishbase when it doesn’t (often). There is a variety listed here that is of culinary interest either marketed in Southern California or widely available at the fish markets. During the Devonian period, creatures like mice and rats first appeared with their transitional limbs. In addition to amphibians, reptiles, mammals, and birds, tetrapods evolved from lobe-finned fish.įish evolved into tetrapods, which include amphibians, reptiles, mammals, and birds, during the Devonian. There was a high level of variety among fish species during the Devonian period, especially among placoderms, as well as among lobe-finned fish and early sharks. This group might have evolved early from other agnathans since lampreys belong to the Cyclostomata, which also includes hagfish.įrom the Silurian era, the earliest jawed vertebrates are known to be two groups of fish: Acanthodii (or spiny sharks), which are armored marine fish that evolve from ostracoderms and placoderms. Ostracoderms, which are mostly armored fish, and jawless fish called conodonts made their first appearances in the late Cambrian. Early chordates developed a skull and vertebral column, giving rise to the first creatures and vertebrates.Īn example of an early jawless fish is Haikouichthys, which comes from the Agnathes lineage. It was during the Cambrian explosion that fish evolved 530 million years ago. Echinoderms, such as sea urchins and trepang, are included as well. Mollusks (such as mollusk meat, shells, pearls, and dyes such as Tyrian purple) and crustaceans, such as shrimp, crabs, and lobster, are also among fishes.
Specifically, fishes are classified by their scales or fins, cartilaginous tissue (sharks and rays), amphibians, reptiles (water snakes, turtles, tortoises), and most importantly, marine mammals (seals, whales, dugongs, and manatees) that provide food, fuel, and cover for marine life. The animals that primarily live in water are referred to as fish in this article. As laboratory animals, fish are often used in medical and biological research. The five classes of living fishes are as distinct from one another as the familiar four classes of air-breathing mammals, birds, and reptiles.
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