The fish family Psychrolutidae contains over 35 recognized species in 8 genera. This family consists of bottom-dwelling marine sculpins shaped like tadpoles, with large heads and bodies that taper back into small, flat tails. The skin is loosely attached and movable, and the layer underneath it is gelatinous. The eyes are placed high on the head, focused forward closer to the tip of the snout. Members of the family generally have large, leaf-like pectoral fins and lack scales, although some species are covered with soft spines. This is important to the species as the depths in which they live are highly pressurized and they are ambush/opportunistic/foraging predators that do not expend energy unless they are forced to. The blobfish has a short, broad tongue and conical teeth that are slightly recurved and are arranged in bands in irregular rows along the premaxillaries; canines are completely absent. Teeth are nonexistent on the palatines and vomer; which make up the hard palate. The blobfish also has a set of specialized pharyngeal teeth that are well developed and paired evenly along the upper and lower portions of the pharyngeal arch. These specialized teeth may aid in the breakdown of food due to the very strategic dependency on whatever food falls from above.
Sea lice are copepods of the family Caligidae within the order Siphonostomatoida. They are marine ectoparasites that feed on the mucus, epidermal tissue, and blood of host fish. The roughly 559 species in 37 genera include around 162 Lepeophtheirus and 268 Caligus species.
The deepwater sculpin is a species of freshwater fish in the family Cottidae of order Scorpaeniformes. It is a glacial relict, native to a limited number of deep, cold lakes in Canada and the United States.
Gratzianov
Myoxocephalus is a genus of marine ray-finned fishes belonging to the family Cottidae, the typical sculpins. They are found in the norther Pacific, Arctic and Atlantic Oceans, with a few species in lakes.
Myoxocephalus scorpius, typically known as the shorthorn sculpin or bull-rout, is a species of fish in the family Cottidae. It is a demersal species of the Northern Atlantic and adjacent subarctic and Arctic seas. The species has many English names that are used less frequently or in small parts of its range, including Arctic sculpin, daddy sculpin, European sculpin, father-lasher, goat sculpin, Greenland sculpin, guffy, horny whore, pig-fish, scully, scummy, short-spined sea scorpion and warty sculpin.
The salmon louse is a species of copepod in the genus Lepeophtheirus. It is a sea louse, a parasite living mostly on salmon, particularly on Pacific and Atlantic salmon and sea trout, but is also sometimes found on the three-spined stickleback. It feeds on the mucus, skin and blood of the fish. Once detached, they can be blown by wind across the surface of the sea, like plankton. When they encounter a suitable marine fish host, they adhere themselves to the skin, fins, or gills of the fish, and feed on the mucus or skin. Sea lice only affect fish and are not harmful to humans.
Crustaceans may pass through a number of larval and immature stages between hatching from their eggs and reaching their adult form. Each of the stages is separated by a moult, in which the hard exoskeleton is shed to allow the animal to grow. The larvae of crustaceans often bear little resemblance to the adult, and there are still cases where it is not known what larvae will grow into what adults. This is especially true of crustaceans which live as benthic adults, more-so than where the larvae are planktonic, and thereby easily caught.
Bero elegans is a species of marine ray-finned fish belonging to the family Cottidae, the typical sculpins. This species is found in the northwestern Pacific Ocean. This species grows to a length of 20 centimetres (7.9 in) TL. It is the only known member of the genus Bero.
Megalocottus is a small genus of marine ray-finned fishes belonging to the family Cottidae, the typical sculpins. These fishes are found in the western Pacific Ocean.
Microcottus is a small genus of marine ray-finned fishes belonging to the family Cottidae, the typical sculpins. These fishes are found in the northern Pacific Ocean.
Alcichthys is a monospecific genus of marine ray-finned fish belonging to the family Cottidae, the "typical" sculpins. The only species in the genus is Alcichthys elongatus, which occurs in the northwestern Pacific Ocean.
The longhorn sculpin is a Northwest Atlantic species of sculpin in the fish family Cottidae. It is a predatory and scavenging fish that can feed on the remains of other organisms.
Myoxocephalus aenaeus. commonly known as the grubby, or little sculpin, is a species of marine ray-finned fish belonging to the family Cottidae, the typical sculpins. This species is found in the northwestern Atlantic Ocean.
Myoxocephalus jaok, the plain sculpin, is a species of marine ray-finned fish belonging to the family Cottidae, the typical sculpins. This species is found in the northern Pacific Ocean and adjacent Arctic Ocean.
Myoxocephalus polyacanthocephalus, the great sculpin, is a North Pacific species of sculpin in the family Cottidae. Its range encompasses the Bering Sea and the Aleutian Islands, and extends from Hokkaido and the Kamchatka Peninsula to the Puget Sound, Washington. It is the largest member of the genus Myoxocephalus and the second most common in the Bering Sea. It can grow to a size of 80 cm and 9 kg weight.
Myoxocephalus scorpioides, the Arctic sculpin or northern sculpin, is a predatory species of sculpin in the fish family Cottidae. The species is native to the Arctic Ocean around Canada and Greenland, specifically in James Bay and the Strait of Belle Isle, and towards the Bering Sea. It has the ability to synthesize antifreeze proteins, allowing it to withstand temperatures as low as -2 °C. It serves as the host for Haemobaphes cyclopterina, a parasitic species of copepod.
Steller's sculpin, also known as frog sculpin, is a species of sculpin in the fish family Cottidae. The species is native to the northern Pacific, from the Aleutian Islands to the Sea of Okhotsk and the Sea of Japan. Described by Wilhelm Gottlieb Tilesius von Tilenau in 1811, it is the type species of the genus Myoxocephalus.
Sebastes schlegelii, also known as the Korean rockfish, Northern black seaperch, and Black rockfish, is a predatory species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae It is found in the Northwest Pacific Ocean.
Lepeophtheirus elegans is a species of sea lice.
