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Chaenogaleus macrostoma (Bleeker, 1852)
Hooked Shark, Hooked Big-eyed Shark, Indian Ocean Big-eyed Shark, Indian Ocean Hooked Shark, Indo-American Hooked Big-eyed Shark, Malayan Big-eyed Shark, Malay Hooked-toothed Shark, Malayan Hooked Great-toed Shark
(Rus),
Hooktooth shark, hook-toothed shark
(Eng)
Synonyms:
Hemigaleus balfouri Day, 1878
Hemigaleus macrostoma Bleeker, 1852
Negogaleus balfouri (Day, 1878)
Negogaleus macrostoma (Bleeker, 1852)

The species was first described in 1852 by the Dutch ichthyologist Blecker (Peter Blecker - Dutch. Pieter Bleeker, 1819 - 1878, a Dutch physician and ichthyologist, was a medical officer in the Dutch East Indies Army from 1842 to 1860 and was in Indonesia, where he gathered about The 12 thousand fish samples that are now in the collection of the Natural History Museum in Leiden are famous for their work on the fish of Indonesia - Atlas Ichthyologique des Orientales Neerlandaises - published in 1862-1877 with more than 1,500 illustrations, published more than 500 articles on ichthyology, described 511 new births and 1925 new s species). Bleeker P. 1852 Bijdrage tot de kennis der Plagiostomen van den Indischen Archipel. Initiations Africaines. III. Poissons de Mer du Sénégal. v. 24 (art. 12): P. 1–92
The name of the genus Chaenogaleus comes from the Greek words chaeno - “yawn” and γαλεος (galeos) - “shark”, referring to the wide mouth of the shark. The species epithet macrostoma comes from the Greek words μακρος (makros) - “large” and στομα (stoma) - “mouth”, indicating a long, strongly arched mouth compared to Hemigaleus microstoma Bleeker, 1852.
The holotype mentioned by Blecker was a male 69.9 cm long and was originally kept in the British Museum. Subsequently lost. Probably, along with three representatives of the family of big-eyed sharks that live in Indo-Pakistani waters, the hooked-toothed big-eyed shark was mistakenly called Hemigaleus balfouri. In addition, this species is often confused with Hemipristis elongatus.
Hooked-toothed big-eyed sharks live (30 ° N - 10 ° S) in the Indian Ocean, as well as in the northwestern and centralwestern Pacific Ocean - in the Persian Gulf, off the coast of Pakistan, India, Sri Lanka , Singapore, Thailand, Vietnam, China, Taiwan and Indonesia (Java, Sulawesi). They are found on the continental and island shelf to a depth of 59 m.
The hook-toothed big-eyed sharks have a thin body and an elongated muzzle. Large oval eyes are elongated horizontally and equipped with blinking membranes. Behind the eyes there is tiny splatter. The gill slits are very long, 1.8–2.1 times the length of the eye. Mouth in the form of a long parabola. The length of the mouth is 66-82% of its width. The lower jaw is rounded on the symphysis. At the corners of the mouth there are labial grooves. Long and hooked lower teeth are visible even when the mouth is closed. The tip of each of the upper teeth is bent to the corner of the mouth and (only on this side) has lateral teeth; there are no nicks on the lower or upper teeth. The first dorsal fin is rather large; its base lies between the bases of the pectoral and ventral fins. The second dorsal fin is 2/3 of the size of the first dorsal fin. Its base is located above the base of the anal fin. The anal fin is significantly smaller than both dorsal fins. The upper tip of the caudal fin has a small ventral notch. Color from light gray to bronze without markings.
Hooked-toothed big-eyed sharks reproduce by placental live birth. The length of newborns is about 20 cm. There are up to 4 newborns in a litter. The maximum fixed size is 150 cm (according to other sources 100 cm) with a weight of up to 12 kg. Males reach puberty with a length of 83–97 cm. The diet probably consists of small bony fish, cephalopods and crustaceans.
On these sharks, cestodes Clistobothrium tumidum, Megalonchos mandleyi, Pterobothrium heteracanthum and Pterobothrium sp.
The view is not dangerous to humans. These sharks are produced in a makeshift way off the coast of Sri Lanka and Pakistan. They are caught using bottom gill nets and tiers. The meat is eaten, fish meal is produced from waste. Due to their small size, fins are not very valuable. Intensive fishing is carried out in the area, the species is prone to overfishing. The International Union for Conservation of Nature has assigned this species a Vulnerable Conservation Status.

Negogaleus macrostoma (Bleeker, 1852)
Hemigaleus macrostoma Bleeker, 1852
Body color from above is gray even, belly off-white. Fins sometimes with white edges (especially in young individuals).
Biology. Studied poorly. The maximum body length is 0.7 m. Maturity occurs in mass with a length of about 45 cm. Predators.
Spread. Off the coast of Indonesia, the Philippines, Vietnam and South China.
Economic value. Minor coastal fisheries.

Negogaleus balfouri (Day, 1878)
Hemigaleus balfouri Day, 1878
Body color is dark brown, pale belly. The fins have a paler color than the back and upper sections of the sides. The end of the second dorsal fin is dark. The teeth on the upper jaw are serrated at the base and inclined to the corners of the mouth. Teeth on the lower jaw straight with smooth edges. Only the 1st row of teeth functions.
Biology. The maximum body length is 1 m. Maturity in the mass occurs at a length of about 0.8 m. Reproduction has not been studied. Predators
Spread. The coastal waters of the Arabian Sea within the shelf.
Economic value. Like bycatch.

Meaning of the word big-eyed. What is a big-eyed?

The big-eyed snake (Ptyas mucosa) is a common species of the snake family that already lives in some areas of South and Southeast Asia. The length of this large snake is almost two meters.

Big-eyed whitefish (lat. Channichthys bospori) is a marine autochthonous Antarctic bottom-pelagic fish of the family of white-blooded (Channichthyidae) from the order of perciformes (Perciformes).

Big-eyed fox shark

The big-eyed fox shark, or the big-eyed sea fox (Alopias superciliosus) is a species of cartilaginous fish of the genus fox sharks of the same family of the order Lamiform. It lives in all the temperate and tropical waters of the Indian.

Big-eyed six-footed shark

The large-eyed six-footed shark (Hexanchus nakamurai) is a poorly studied deep-water species of the genus six-footed sharks (Hexanchus) of the family of multi-branchial sharks.

Big-eyes (Latin: Notiophilus) is a genus of ground beetles from the subfamily of dams, numbering 59 species with a certain number of subspecies. Beetles 4-7 mm long. These beetles are characterized by large bulging eyes. The head is large with longitudinal keels on the forehead.

Big-eyed sharks (Hemigaleidae) - a family of cartilaginous fish of the order Karhariniformes. They live from the eastern part of the Atlantic Ocean to the continental coast of the Indo-Pacific region.

Big-eyed snakes, or Asiatic rat snakes (lat. Ptyas) - the genus of snakes of the family already distinctive. Body length with a tail up to 360 cm. Distributed in South, East and Southeast Asia.

Indo-Malayan Big-Eyed Shark

The Indo-Malayan big-eyed shark (Hemigaleus microstoma) is a species of cartilaginous fish of the genus of large-eyed sharks of the family of large-eyed sharks of the carcharine order. It lives in the Indian and Pacific Ocean. Propagated by placental live birth.

Big Tooth Shark

The hooked-toothed big-eyed shark, or the Indian Ocean big-eyed shark, or the Malayan big-eyed shark (Chaenogaleus macrostoma) is the only species of the hooked-toothed big-eyed shark (Chaenogaleus).

Morphemic and spelling dictionary. - 2002

Большеглазые акулы

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