| Nemamyxine kreffti | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Infraphylum: | Agnatha |
| Class: | Myxini |
| Order: | Myxiniformes |
| Family: | Myxinidae |
| Genus: | Nemamyxine |
| Species: | N. kreffti |
| Binomial name | |
| Nemamyxine kreffti C. B. McMillan & Wisner, 1982 | |
Nemamyxine kreffti, also known as Krefft's hagfish, is a species of fish in the hagfish family Myxinidae. It is found in the south-western Atlantic Ocean from off Argentina and southern Brazil. [2]
This species reaches a length of 40.0 cm (15.7 in). [3]
The fish is named in honor of German ichthyologist-herpetologist Gerhard Krefft (1912‒1993), Institute für Seefischerei in Hamburg. [4]
Hagfish, of the class Myxini and order Myxiniformes, are eel-shaped jawless fish. They are the only known living animals that have a skull but no vertebral column, although hagfish do have rudimentary vertebrae. Hagfish are marine predators and scavengers. Hagfish defend themselves against predators by releasing copious amounts of slime from glands in their skin.
Eptatretus springeri, the Gulf hagfish, is a bathydemersal vertebrate which lives primarily in the northeastern Gulf of Mexico. It has been observed feeding at and around brine pools: areas of high salinity which resemble lakes on the ocean floor that do not mix with the surrounding water due to difference in density. The high salt content, approximately 200 ppt compared to 35 ppt for standard seawater, creates a buoyant surface which renders oceanic submersibles unable to descend into the pool. It is believed that the inside of the pools only supports microbial life, while the majority of macroscopic life, such as methane-utilizing mussels, exists on the edges. The Gulf hagfish feeds on the primary producers of these environments, as well as other predators.
The broadgilled hagfish or New Zealand hagfish, also known by its Māori language name tuere, is a hagfish found around New Zealand and the Chatham Islands as well as around the south and east coasts of Australia, at depths between 1 and 900 metres.
The Pacific hagfish is a species of hagfish. It lives in the mesopelagic to abyssal Pacific ocean, near the ocean floor. It is a jawless fish and has a body plan that resembles early paleozoic fish. They are able to excrete prodigious amounts of slime in self-defense.
Krefft's warty frog, or Krefft's secret frog, is a species of frog in the family Brevicipitidae. It is found in the Eastern Arc Mountains in Tanzania and in southern Kenya. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical moist montane forests, rural gardens, and heavily degraded former forest. It is threatened by habitat loss.
Eptatretus is a large genus of hagfish.
The inshore hagfish is a hagfish found in the Northwest Pacific, from the Sea of Japan and across eastern Japan to Taiwan. It has six pairs of gill pouches and gill apertures. These hagfish are found in the sublittoral zone. They live usually buried in the bottom mud and migrate into deeper water to spawn. The inshore hagfish is the only member of the Myxinidae family having a seasonal reproductive cycle.
The southern hagfish is a hagfish of the genus Myxine.
Myxine glutinosa, known as the Atlantic hagfish in North America, and often simply as the hagfish in Europe, is a species of jawless fish of the genus Myxine.
Nemamyxine is a genus of hagfish.
Neomyxine biniplicata, the slender hagfish, is a species of hagfish endemic to New Zealand. It is known from along the east coast, from the northern end of the Bay of Plenty to Kaikōura at depths of 35–396 m, and is found on silty to coarse sediments and rocky seabeds.
Nemamyxine elongata, the bootlace hagfish, is a species of hagfish in the genus Nemamyxine. Distribution, abundance, and natural history are not known. Only two specimens have been collected. One, dead, was found in a net in the Kaituna River, and thought to have been a fishery discard. The other was collected alive during a trawl at 132-140m in the Canterbury Bight. The larger specimen was 867 mm TL but maximum size is unknown. One specimen was a female with small eggs similar to those of other hagfish species..
The white-headed hagfish is a species of jawless fish of the family Myxinidae (hagfish).
Gigantactis kreffti is a species of fish in the whipnose angler (Gigantactinidae) family, first described in 1981 by Erik Bertelsen, Theodore Wells Pietsch III and Robert J. Lavenberg. The specific name, kreffti, honours the ichythyologist, Gerhard Krefft.
Gerhard Krefft was a German ichthyologist and herpetologist.
Myxine circifrons, the whiteface hagfish, is a marine bathydemersal species of fish in the family Myxinidae. It is found off Southern California, Peru, and Chile and grows to 65 centimetres (26 in) total length.
Myxine affinis, the Patagonian hagfish, is a species of jawless fish in the family Myxinidae.
Myxine capensis, the Cape hagfish, is a species of jawless fish in the family Myxinidae.
Myxine fernholmi, also known as Fernholm's hagfish, is a species of jawless fish in the family Myxinidae. It is named after Swedish ichthyologist Bo Fernholm.
Rubicundus lopheliae, the lophelia hagfish, is a species of jawless fish in the family Myxinidae.
 | This jawless fish-related article is a stub. You can help Wikipedia by expanding it. |
