- published: 14 Jan 2015
- views: 3662
Fins are usually the most distinctive features of a fish, composed of bony spines or rays protruding from the body with skin covering them and joining them together, either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as seen in sharks. Apart from the tail or caudal fin, fish fins have no direct connection with the spine and are supported by muscles only. Their principal function is to help the fish swim. Fins located in different places on the fish serve different purposes, such as moving forward, turning, keeping an upright position or stopping. Most fish use fins when swimming, flying fish use pectoral fins for gliding, and frogfish use them for crawling. Fins can also be used for other purposes; male sharks and mosquitofish use a modified fin to deliver sperm, thresher sharks use their caudal fin to stun prey, reef stonefish have spines in their dorsal fins that inject venom, anglerfish use the first spine of their dorsal fin like a fishing rod to lure prey, and triggerfish avoid predators by squeezing into coral crevices and using spines in their fins to lock themselves in place.
As you can see from the video the fish gets a prosthetic new main ray after damaging it's self. and at the end of the video it shows that the fish fully recovered and carried on with its life.
In 2015, the Division of Marine Fisheries adopted a new regulation to prevent unlawful “stockpiling” of striped bass on closed commercial fishing days in the striped bass fishery. Beginning on June 20 each year through the end of the commercial season, commercial striped bass fishermen recreationally fishing on a closed commercial fishing day must immediately and completely remove the entire right pectoral fin of any striped bass 34” or greater that they retain. To aid in enforcement, this rule also applies to any person fishing aboard a vessel that is either named on a commercial striped bass permit endorsement or carrying the holder of a commercial striped bass permit endorsement. Concurrently, dealers are prohibited from purchasing and selling any striped bass that has had its right pec...
Before and after of an injured pectoral fin in a koi fish
The humpback's pectoral fin is longer than that of all other species of whales, measuring one-third the whale's body length, or approximately twelve to fifteen feet. Humpbacks will often roll onto their side or back and slowly slap the water's surface with one fin or both fins simultaneously. The slapping of fins may serve as a communication signal to other whales. 12 January 2016 off of Kihei Boat Ramp.
Gummy shark caught in the Indian Ocean off the coast of Perth Western Australia on a Shimano Terez and a Biomaster 10000 To use this video in a commercial player or in broadcasts, please email licensing@storyful.com Forward all media requests relating to your video to our licensing team: licensing@storyful.com
The humback whales were very playful yesterday. Here is a short video captured by Cruise Director Renee of some pectoral fin slapping & tail lobs #portstephens #whaleon #seeaustralia #newsouthwales
A Humpback Whale slapping its pectoral fins, as it floats on its back near the surface in the waters of the Monterey Bay, California. See more whale photos at www.centralcoastphotographs.com
Also notice sooty shearwaters, black birds flying love above the water.