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The large egg size indicates continuous egg laying in hadal snailfish; some species spawn their eggs among cold-water coral, kelp, stones, or xenophyophores, and the males will guard the egg sometimes. [17] Liparids have ventral sucking disk that is used to attach to king crab and deposits its eggs inside the carapace of the gills. [19]
Like other snailfish, they lack scales and have a loose gelatinous skin; a few species are covered in prickly spines. [ 2 ] Most species of Careproctus are poorly known, but they feed on small animals and some have unusual breeding behaviors: At least C. ovigerus appears to be a mouth brooder where the eggs are carried and develop in the males ...
A study of females showed that mature eggs are unusually large, up to 9.4 mm (0.37 in) in diameter. In total, there were up to 23 mature eggs for each female (each larger than 5 mm or 0.20 in in diameter), which were alternated with immature, small eggs, the number of which was about 850. Eggs of intermediate size were rarely seen.
Species of deep-sea snailfish have been studied and compared to other ray-finned fishes (also known as teleosts) to analyze their adaptions to deep-sea conditions. The genomes of both the Yap hadal snailfish and Mariana hadal snailfish have been found to contain an abundance of the fmo3 gene, which produces the trimethylamine N-oxide (TMAO) protein stabilizer.
Haeckel (left), 1866 Sea snail shells, Kunstformen der Natur, 1904. Ernst Heinrich Philipp August Haeckel (February 16, 1834 – August 9, 1919), also written von Haeckel, was an eminent German biologist, naturalist, philosopher, physician, professor and artist who discovered, described and named thousands of new species, mapped a genealogical tree relating all life forms, and coined many ...
Liparis fabricii, commonly known as the gelatinous seasnail or gelatinous snailfish, is a benthopelagic species of snailfish from the Arctic Ocean. It has a tadpole-like body with a maximum length of about 20 cm (7.9 in). It is brown to black in coloration with a distinctive dark peritoneum. It preys on small crustaceans and marine worms.
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Species of the family Trochidae are dioecious, and the fertilization occurs externally by the release of eggs and sperm. [3] Top snail eggs are laid individually or in gelatinous egg masses in the water. Individuals may hatch as free-swimming planktonic larvae or juvenile crawlers with a short swimming stage. [3]