What are the 7 levels of classification of fish?

This hierarchical system moves from largest and most general to smallest and most specific: kingdom, phylum, class, order, family, genus, and species.

How do you classify bony fish?

Class Osteichthyes includes all bony fishes. Like all fishes, Osteichthyes are cold-blooded vertebrates that breathe through gills and use fins for swimming. Bony fishes share several distinguishing features: a skeleton of bone, scales, paired fins, one pair of gill openings, jaws, and paired nostrils.

What are the 5 classifications of fish?

There are about 28,000 existing species of fish, and they are placed in five classes: hagfish, lampreys, cartilaginous fish, ray-finned bony fish, and lobe-finned bony fish.

What is the order and family of bony fish?

bony fish, (superclass Osteichthyes), any member of the superclass Osteichthyes, a group made up of the classes Sarcopterygii (lobe-finned fishes) and Actinopterygii (ray-finned fishes) in the subphylum Vertebrata, including the great majority of living fishes and virtually all the world’s sport and commercial fishes.

What are the 3 types of bony fish?

The bony fish are divided into two classes: ray-finned fish and lobe-finned fish. The bony fish are characterized by a lung or swim bladder, a cover over the gill called the operculum, and a head and pectoral girdles covered with bones derived from the skin.

How many types of bony fish are there?

Bony fishes/Lower classifications

What was the first bony fish?

Guiyu oneiros, the earliest known bony fish, lived during the Late Silurian, 425 million years ago. It has a combination of both ray-finned and lobe-finned features, although analysis of the totality of its features place it closer to lobe-finned fish.

What are the 5 examples of bony fish?

Sunfish, bass, catfish, trout, and pike are examples of bony fish, as are the freshwater tropical fish that you see in aquariums. Other species of bony fish include: Tuna. Atlantic cod.

How many species of Chondrichthyes are there?

Sharks, batoids (rays and skates), and chimaeras are grouped in the class Chondrichthyes. 1,282 species of chondrichthyans are described globally.

What are characteristics of bony fish?

Bony fish are members of the class osteichthyes, and are defined by their calcified skeleton, hinged jaw, gill arches, gill filaments, and gill rakers. They also have an operculum for pumping water across the gills and swim bladders to control buoyancy, as well as mucous-lined scales.

What do you mean by bony fish?

Definition of bony fish

: any of a major taxon (class Osteichthyes or superclass Teleostomi) comprising fishes (such as sturgeons, eels, mackerels, and sunfish) with a bony rather than a cartilaginous skeleton. — called also teleost. — compare cartilaginous fish, jawless fish.

What is an example of a bony fish?

Bony fishes/Lower classifications

What is the difference between a bony fish and a cartilaginous fish?

However, the most obvious disparity between the two types of fish is the composition of their skeleton. As the name suggests, “bony fish” have a skeleton composed of only bones while a cartilaginous fish has a skeleton made entirely of cartilage.

What was the first bony fish?

Guiyu oneiros, the earliest known bony fish, lived during the Late Silurian, 425 million years ago. It has a combination of both ray-finned and lobe-finned features, although analysis of the totality of its features place it closer to lobe-finned fish.

What are Osteichthyes and Chondrichthyes?

Chondrichthyes refers to a class of fishes that includes those with a cartilaginous skeleton while Osteichthyes refers to a class of fishes that includes those with a bony skeleton.

What are 5 examples of cartilaginous fish?

Cartilaginous fish are fish that have a skeleton made of cartilage, rather than bone.
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Examples of Cartilaginous Fish:
  • Whale Shark.
  • Basking Shark.
  • Great White Shark.
  • Thresher Sharks.
  • Skates.
  • Southern Stingray.

What was the first species of fish?

agnathans
The first fish were primitive jawless forms (agnathans) which appeared in the Early Cambrian, but remained generally rare until the Silurian and Devonian when they underwent a rapid evolution.

What are the 4 types of fish scales?

There are four types of fish scales – placoid, cycloid, ctenoid (pronounced ‘ten-oid’), and ganoid. Most bony fish have cycloid scales. Fish with cycloid scales have the same number of scales their entire lives – the scales enlarge to accommodate a fish’s growth (scales that are lost to injury will be regrown).