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3 days ago · Dorsal Fin: Located on the back of the fish, the dorsal fin plays a key role in stability and preventing the fish from rolling. It can also aid in turning and provide protection, especially in bony fishes where stout spines may be present to deter predators. Some fish even use their dorsal fins to enhance their swimming speed and maneuverability.

A large dorsal fin helps stabilize a short, laterally compressed body, as the fish swims through the water. A large, flared dorsal fin also helps a small fish look bigger and more threatening, as illustrated by the sunfish.

Dorsal fins. The dorsal fins increase the lateral surface of the body during swimming, and thereby provide stability but at the expense of increasing drag.

The Dorsal fins on the mandibular appliance interface with inclines built into the facial of the upper appliance to dictate a specific mandibular position. The device is fabricated with adjustable screws in the maxillary appliance to allow for further mandibular advancement.

May 17, 2019 · Learn how the dorsal fin helps dolphins swim, regulate temperature, and identify individuals. See photos of dolphins with damaged fins and how they cope with them.

A dorsal fin is a fin located on the back of most marine and freshwater vertebrates such as fishes, cetaceans (whales, dolphins, and porpoises), and the (extinct) ichthyosaur. Most species have only one dorsal fin, but some have two or three.

The dorsal fin of older males is very tall (up to 1.8 metres [5.9 feet]) and straight; females and young males have a dorsal fin that is about half that size and distinctly sickle-shaped (falcate). The skull is a metre or more in length and holds…

Sep 1, 2022 · Learn how the size, shape and presence of dorsal fins vary among cetaceans and reflect their adaptations to different environments and behaviours. Discover how dorsal fins affect speed, manoeuvrability, thermoregulation and sexual dimorphism in whales and dolphins.

DynaFlex® Dorsal has a two piece construction that enables more comfort for the patient as well as lateral jaw movement. The Dorsal fins on the mandibular appliance interface with inclines built into the buccal of the upper appliance to dictate a specific mandibular position.

The yellow perch is a rather deep, slab-sided fish that is nearly sunfish-shaped. There are 2 separate dorsal fins. The mouth is moderately large. The upper jaw extends back about as far as the middle of the eye. The anal fin has 2 spines and 6–8 soft rays.

A dorsal fin is a fin on the back of most marine and freshwater vertebrates. Dorsal fins have evolved independently several times through convergent evolution adapting to marine environments, so the fins are not all homologous .

The goldfish resembles the common carp in having a long dorsal fin and a stout, saw-toothed spine at the front of the dorsal and anal fins. However, the goldfish lacks barbels on the corners of the mouth, and there are fewer than 30 scales in the lateral line.