Table of contents:
Video: Great-headed Shark (Cephalurus)
2024 Author: Molly Page | [email protected]. Last modified: 2023-12-17 15:30
The name of the genus - Cephalurus - comes from the Greek words. κεφάλι - "head" and other Greek. αἴλουρος - "cat". Monotypic genus. In large-headed sharks, the first dorsal fin is shifted forward relative to the pelvic fins much more than the second; dorsal and anal fins straight or even slightly concave from base to apex; the contour of the caudal fin is uniformly rounded. The muzzle is very short, the nostrils are separated from the mouth and are far apart and framed by skin folds. The mustache is missing. The head is wide, flattened and round; its length is 1/3 of the total body length. Upper and lower teeth with sharp triangular median projections with 1 to 3 lateral denticles on each side. The eyes are oval. Five pairs of gill slits are clearly visible and arched towards the head.
Photo Makuriwa Museo de Historia Natural Marina
They reproduce by laying eggs. Newborns about 10 cm long are born every summer. In males, sexual maturity occurs at a length of 19 cm, and in females 24 cm.
The diet consists of cephalopods, crustaceans and small fish. They live from the Gulf of California to Baja California at a depth of 155-937 m. Sometimes these sharks are caught in nets as a by-catch, but the great depth at which they live serves them to some extent as protection.
Taxonomy of the genus Greathead sharks:
Recommended:
Fall Of A Cat From A Great Height (windows, Balconies)
There is such a term abroad - " falling cats syndrome" . The fact is that with the onset of spring, we open windows and balcony doors to enjoy the spring sun. And cats immediately begin to gallop merrily on windowsills and railings, hunting for flies and birds
Owston's White-eyed Shark (Centroscymnus Owstonii)
Names: Owston's white-eyed shark, Roughskin dogfish.DescriptionThe holotype of the white-eyed Ouston shark (male, 79 cm long) was caught off the coast of Japan (Honshu Island) and is now in the Museum of Comparative Zoology (Harvard University, USA)
California Greathead Shark (Cephalurus Cephalus)
The California greathead shark is the only species of the same genus (Cephalus). The average body length is considered to be 24 cm. The diet of the California big-headed sharks is based on small crustaceans, invertebrates and small fish. Inhabits southern California (USA), northern Mexico and the Gulf of California
Great Amu Darya Pseudo-shovelnose (Pseudoscaphirhynchus Kaufmanni)
Historically, the large Amu Darya sturgeon (Amu Darya sturgeon, False shovelnose sturgeon) lived from the mouth of the Amu Darya to the Pyanj. The species was first discovered in 1874 by the Russian naturalist M.N.Bogdanov. This is a freshwater fish
The Content Of The Great Toad (Bombina Maxima)
A medium sized aquaterrarium is required to keep a large toad. Equal parts of gravel and sphagnum moss are used as a substrate. No heating required. The duration of daylight hours must be set to 12-14 hours. Toads are fed on land with various invertebrates (worms, flies, crickets, cockroaches, etc