Scientific name of fish

The term “fish” refers to a living organism rather than a taxonomic group. As a result, all fishes belong to the Chordata phylum. Furthermore, the Pisces class, as employed in previous literature, is no longer legitimate. This is because fishes are classified as a paraphyletic group, meaning they share a common ancestor and some, but not all, descendants. In this example, every clade that includes fishes also includes tetrapods, despite the fact that tetrapods are not fish. 

Scientific name of fish:

Any of the about 34,000 vertebrate creatures (phylum Chordata) found in fresh and salt waterways around the world are called fish. Jawless lampreys and hagfishes, cartilaginous sharks, skates, and rays, and plentiful and diverse bony fishes are among the living species. The majority of fish species are cold-blooded, but the opah (Lampris guttatus) is a warm-blooded species. 

Superclass Agnatha (jawless fishes), class Chondrichthyes (cartilaginous fishes), and superclass Osteichthyes (cartilaginous fishes) are the three groupings of fish (bony fishes). The infraphylum Gnathostomata, which includes all jawed vertebrates, includes the last two families. 

Classification of fish:

The following three groupings are used to classify all of the world’s fish species. They are as follows: 

• Agnatha – jawless fish
• Chondrichthyes – cartilaginous fish
• Osteichthyes – bony fish

• Ray finned group
• Lobe finned group 

Agnatha:

Jawless and without paired fins, agnathan are a type of fish. They also do not have an internal skeleton. They suck the blood of their victims using a circular tooth mouth (cyclostomic). There are two major categories of them. Hagfish and lampreys are the creatures in question 

Chondrichthyes:

The Chrondrichthyes includes both dangerous predators and innocuous mollusk eaters. The cartilaginous fish has a real bone skeleton as well as a cartilage-based skeleton. Only the teeth and, on rare occasions, the vertebrae of this species are calcified. The chondrichthyes family includes sharks, skates, and rays. 

Osteichthyes:

This species’ fish have a spindle shape, an oval section, and are flattened. Scales cover the skin to protect it. Some of the fish in this category have functioning lungs and excellent vision. To stay buoyant, these bony fish have a peculiar gas-filled chamber called an air bladder under their backbone. Operculum, a bone on the sides of the fish that protects the chambers that house the gills, is another adaptation. 

Structural diversity of fish:

Fish have been around for about 450 million years, and over that time they have evolved to fit into practically every form of aquatic ecosystem imaginable. Land vertebrates are, in some ways, just highly modified fish: when fish inhabited land habitats, they evolved into tetrapod (four-legged) land vertebrates. Many fishes fit the conventional image of a fish as a slick, streamlined aquatic animal with fins and gills, but far more fishes diverge from that image than conform to it. 

Locomotion of fish:

Many fishes in both marine and freshwater swim at the surface and have mouths that are designed to feed best (and occasionally exclusively) at the surface. Needles, halfbeaks, and topminnows (such as killifish and mosquito fish) are examples of such fishes that are long and slender, able to dart at surface insects or other surface fishes and, in turn, dart away from predators. Oceanic flying fishes avoid predators by gaining speed above the water’s surface, with the lower lobe of the tail producing push in the water. On expanded, wing like pectoral and pelvic fins, they glide hundreds of yards. South American freshwater flying fishes evade their predators by leaping and propelling themselves out of the water with their strong keeled bodies. 

Milkfish:

In the Canidae family, the milkfish (Chanos chanos) is the only surviving species. However, there are at least five Cretaceous genera that are no longer extant. The scientific name (tautonym) is derived from the Greek khanos. From South Africa to Hawaii and the Marquesas, from California to the Galapagos, north to Japan, south to Australia, Chanos chanos can be found in the Indian Ocean and the Pacific Ocean. Milkfish may be found in tropical offshore marine areas near islands and along continental shelf, at depths ranging from 1 to 30 metres. They are also known to frequent estuaries and rivers. 

Conclusion:

Fish are a valuable resource for humans all around the world, notably as food. Fish are hunted in wild fisheries or farmed in ponds or cages in the ocean by commercial and subsistence fishermen (in aquaculture). Recreational anglers catch them, and they are maintained as pets, nurtured by fishkeepers, and displayed in public aquariums. Fish have played a significant part in culture throughout history, functioning as deities, religious symbols, and topics of art, literature, and film.