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Hagfish can exude copious quantities of a milky and fibrous slime or mucus, from specialized slime glands. [5] When released in seawater, the slime expands to 10,000 times its original size in 0.4 seconds. [12] This slime that hagfish excrete has very thin fibers that make it more durable and retentive than the slime excreted by other animals. [13]
The record size ocean sunfish crashed into a boat off Bird Island, Australia in 1910 and measured 4.3 m (14 ft) from fin-to-fin, 3.1 m (10 ft) in length and weighed about 2,300 kg (5,100 lb), [1] while the other record for the biggest bony fish is yet held by a Mola alexandrini which was also coincidentally 2,300 kg (5,100 lb) in mass and 3 m ...
And for salinity, it is a liming factor for all hagfish, the Atlantic hagfish favors ppt at around 32 to 32ppt or a little bit above. From previous studies, salinity with 20–25ppt is lethal to those hagfish and with a salinity of 29–31 ppt they can survive a few weeks but won’t eat anything at all.
Eptatretus springeri, the Gulf hagfish, [3] is a bathy demersal vertebrate which lives primarily in the northeastern Gulf of Mexico. [4] 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 .
Hagfish also only have one nostril, which is located above the mouth. [6] Pacific hagfish heads. Starting about one quarter of their body length from the front are 10–14 gill pores. [4] Hagfish have loosely fitted, slimy skins, and are notorious for their slime-production capability.
King of herrings: The king of herrings is the longest bony fish. Its total length can reach 11 m (36 ft), and it can weigh up to 272 kilograms (600 lb). It is a rarely seen oarfish, found in all the world's oceans at depths of between 20 m (66 ft) and 1,000 m (3,300 ft). [65] Mekong giant catfish
Eptatretus deani, the black hagfish, is a species of hagfish. Common to other species of hagfish, their unusual feeding habits and slime -producing capabilities have led members of the scientific and popular media to dub the hagfish as the most "disgusting" of all sea creatures.
The size of captured specimens ranges between 91 and 394 mm. The southern hagfish is found in the cold waters of the Southwestern Atlantic Ocean from the coasts off Southwestern Brazil down to the Southern Ocean and the Tierra del Fuego and the Patagonian coasts of Chile and Argentina, including the Strait of Magellan .