| Squalus altipinnis | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Order: | Squaliformes |
| Family: | Squalidae |
| Genus: | Squalus |
| Species: | S. altipinnis |
| Binomial name | |
| Squalus altipinnis | |
Squalus altipinnis, the western highfin spurdog, is a dogfish of the family Squalidae found on the continental shelf off Western Australia, at depths between 220 and 510 m. Its reproduction is ovoviviparous. [2]
The spiny dogfish, spurdog, mud shark, or piked dogfish is one of the best known species of the Squalidae (dogfish) family of sharks, which is part of the Squaliformes order.
Squalus is a genus of dogfish sharks in the family Squalidae. Commonly known as spurdogs, these sharks are characterized by smooth dorsal fin spines, teeth in upper and lower jaws similar in size, caudal peduncle with lateral keels; upper precaudal pit usually present, and caudal fin without subterminal notch. In spurdogs, the hyomandibula is oriented at a right angle to the neurocranium, while in other sharks, the hyomandibula runs more parallel to the body. This led some to think that the upper jaw of Squalus would not be as protractile as the jaws of other sharks. However, a study that compared different jaw suspension types in sharks showed that this is not the case and that Squalus is quite capable of protruding its upper jaw during feeding.
The longnose spurdog is a dogfish shark of the genus Squalus, found over continental shelves in all oceans, at depths of between 15 and 800 metres. They reach one metre in length.
The Cuban dogfish is a dogfish, a member of the family Squalidae in the order Squaliformes.
The Japanese spurdog is a dogfish, a member of the family Squalidae. It is found in the western Pacific Ocean – southeastern Japan and the East China Sea, including the Republic of Korea, the Philippines, and the Arafura Sea. It occurs in temperate and tropical waters along the continental shelf and slopes and primarily feeds on teleost fish and squid. It is caught as bycatch in commercial fishing, which has caused populations to decline.
The shortnose spurdog also known as the piked spurdog is a small shark located primarily off the coast of Southern Australia and South Africa. The shortnose spurdog's size is dependent on the sex of the animal. The female shortnose spurdog is consistently larger than the male shortnose spurdog and will typically measure out to about 56.41 cm (1.85 ft) while the male shortnose spurdog will typically only measure out to about 44.36 cm in length (1.46 ft) which means the female shortnose spurdog is over 10 cm longer than the male shortnose spurdog. Some females can even measure up to 78 cm which is over 2.5 feet long. The life span of spurdog's can be quite long with females typically living longer than males. The average life span of a female shortnose spurdog is 0–29 years old while the male life span is 0-26 though it is estimated that a female can live up to 46 years while a male can only live up to 33. Females also take longer to reach sexual maturity than males and on average are not fertile until they are over 15 years of age. 7 years longer than the 8 years it takes males to reach maturity. The shortnose spurdog's eat a variety of items but primarily favor cephalopods such as squid and octopuses for their meals. Other organisms that have been found in their stomachs include fish, hermit crabs, sponges, brittle stars, the remains of sea lion and even primary producers such as algae.
The blacktailed spurdog is a dogfish, a member of the family Squalidae, found around New Caledonia in the central Pacific Ocean, at depths from 320 to 320 m. Its length is up to 75 cm.
The Cyrano spurdog is a dogfish, a member of the family Squalidae, found in the western central Pacific Ocean between latitudes 16°S and 18°S at depths between 320 and 400 m. Its length is up to 77 cm.
Squalus notocaudatus, the bartail spurdog, is a dogfish of the family Squalidae, found on the continental shelf off Queensland, Australia, at depths between 220 and 450 m. The length of the longest specimen measured, an immature male, is 62 cm (24 in). Its reproduction is ovoviviparous .
Squalus albifrons, the eastern highfin spurdog, is a dogfish described in 2007. It is a member of the family Squalidae, found on the continental shelf off Queensland, Australia, at depths between 220 and 510 m. The length of the longest specimen measured is 65 cm (26 in). Its reproduction is ovoviviparous.
Squalus crassispinus, the fatspine spurdog, is a dogfish of the family Squalidae, found on the continental shelf off the northern coast of Western Australia, at depths of 180 to 200 metres. The length of the longest male specimen measured is 56 centimetres (22 in).
Squalus nasutus, the western longnose spurdog, is a dogfish of the family Squalidae, found on the continental shelf off the northwest and southwest coasts of Western Australia, at depths between 300 and 510 m. Its length is at least 55 cm.
Squalus grahami, the eastern longnose spurdog, is a dogfish of the family Squalidae, found off northern Queensland, at depths between 220 and 500 m. Its length is up to 64 cm. Its reproduction is ovoviviparous.
Enneapterygius altipinnis also known as the highfin triplefin is a species of triplefin blenny in the genus Enneapterygius. It is found in the Red Sea. It was regarded as a synonym of Enneapterygius tutuilae but in 2018 the species was reinstated as being valid.
Scarus altipinnis, the filament-finned parrotfish, high-fin parrotfish or mini-fin parrotfish, is a species of marine ray-finned fish, a parrotfish from the family Scaridae. It occurs in the tropical and subtropical Western Pacific Ocean.
The Pacific spiny dogfish is a common species of the Squalidae (dogfish) family of sharks and are among the most abundant species of sharks in the world. This species is closely related to Squalus acanthias and for many years they were treated as a single species. Recent research, using meristic, morphological and molecular data led to the resurrection of the Pacific spiny dogfish as a separate species. The American Fisheries Society recommends the common name "Pacific spiny dogfish" for Squalus suckleyi over alternatives such as "spotted spiny dogfish" and "North Pacific spiny dogfish" and "spiny dogfish" for Squalus acanthias.
The greeneye spurdog is a species of dogfish described in 2007. It is a member of the family Squalidae, found off the coast of southeastern Australia. The length of the longest specimen measured is 85.6 cm (33.7 in). It was considered conspecific with the shortspine spurdog.
Edmund's spurdog is a dogfish described in 2007. It is a member of the family Squalidae, found off western Australia and Indonesia. The length of the longest specimen measured is 70.0 cm (27.6 in).
Pimelodella altipinnis is a species of three-barbeled catfish of the family Heptapteridae. It is endemic to the Essequibo River basin in Guyana.
Rabaulichthys altipinnis, the sailfin anthias, is a species of ray-finned fish within the family Serranidae. The species grows to a length of 6 centimeters, with 10 dorsal spines, 15 to 16 dorsal soft rays, 3 anal spines, and 6 to 7 anal soft rays. It is found in the western Pacific Ocean off of New Britain, Indonesia and Australia.
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