Monday, October 10, 2011

Life of Chain Catshark

Life of Sea | Chain Catshark (Scyliorhinus retifer) | The Chain catshark or Chain dogfish is a small, spotted shark that a characteristic fluorescent activity. The species is considered harmless and rarely encountered by humans. Their habitat is usually the outer continental shelf and upper slope on rough, rocky bottoms at depths ranging from 75 to 550 m. The benthic (bottom-dwelling) Chain catshark is found in the western Atlantic from southern New England to Florida in the U.S. and in the northern Gulf of Mexico to Nicaragua. In the western Caribbean are found in the Yucatan Peninsula to Nicaragua.
 
Scientific classification
Kingdom:     Animalia
Phylum:     Chordata
Class:     Chondrichthyes
Subclass:     Elasmobranchii
Order:     Carcharhiniformes
Family:     Scyliorhinidae
Genus:     Scyliorhinus
Species:     S. retifer

Chain catshark has a small, slender body, which is marked with a bold pattern of distinct black lines on a tan background. The origin of the first dorsal fin is located behind the rear tip of pelvic fin. They are known for their beautiful, bright emerald green cat eyes. They reach a maximum size of 48 cm. The goal of fluorescence of the shark is still unclear.

This shark feeds on small prey such as small deepwater fish, crustaceans and cephalopods. The daytime resting Chain catshark spends on the ground, usually in contact with certain structures. It has been observed with large burrowing anemone cerianthid pipes and boulders. The soil debris is thought to be used as a camouflage the shark spotted in the area. Adult sharks tend to prefer rough bottoms, creating a problem for trawl sampling, while the immature forms found near smoother regions.
 
Observed mating between species suggests biting plays a factor and that mating occurs repeatedly. Behavioural observations in the male bites the female until a strong grip, and then wraps her body around the female for copulation. After mating, the male brings his biting and both separated. Chain catshark is harmless and rarely encountered by humans in the wild. Very little is known about the most catsharks due to their deep water nature and relatively low abundance. The Chain catshark as "beautiful" and "ideal candidate" for being bred in captivity

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