Webbony 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 … WebDec 1, 2024 · Bony fish also have an operculum. The operculum is a bony flap of skin over their gills that protects the gills. It opens and closes to help bony fish breathe when they are not swimming. Bony fish have scales, and most species have a …
Cartilaginous Fishes Encyclopedia.com
The operculum is a series of bones found in bony fish and chimaeras that serves as a facial support structure and a protective covering for the gills; it is also used for respiration and feeding. See more The opercular series contains four bone segments known as the preoperculum, suboperculum, interoperculum and operculum. The preoperculum is a crescent-shaped structure that has a series of ridges … See more • Hyomandibula See more During development the opercular series is known to be one of the first bone structures to form. In the three-spined stickleback the opercular series is seen forming at around seven days after fertilization. Within hours the formation of the shape is visible … See more WebFeb 17, 2024 · A bony plate called the operculum guards the gills and is also responsible for maintaining water pressure when a fish is not moving. Vertebrates can have two types of gills: external... new folder keyboard shortcut
How Do Gills Work? - Ocean Conservancy
Bony fish are characterized by a relatively stable pattern of cranial bones, rooted, medial insertion of mandibular muscle in the lower jaw. The head and pectoral girdles are covered with large dermal bones. The eyeball is supported by a sclerotic ring of four small bones, but this characteristic has been lost or modified in many modern species. The labyrinth in the inner ear contains large WebJun 22, 2024 · The operculum is a series of bones found in bony fish and chimaeras that serves as a facial support structure and a protective covering for the gills; it is also used for respiration and feeding. What is the operculum in fish made of? Operculum (fish) The operculum of a bony fish is the hard bony flap covering and protecting the gills. WebJan 24, 2024 · In contrast, bony fish have a special bone called the operculum that lets them use their gills without ram ventilation. The operculum rests directly above the gills and covers them. Thanks to the operculum, bony fish can actively swallow water and push it through their gills. new folder keyboard shortcut windows