The Pacific cod is a species of ray-finned fish in the family Gadidae. It is a bottom-dwelling fish found in the northern Pacific Ocean, mainly on the continental shelf and upper slopes, to depths of about 900 m (3,000 ft). It can grow to a length of a meter or so and is found in large schools. It is an important commercial food species and is also known as gray cod or grey cod, and grayfish or greyfish. Fishing for this species is regulated with quotas being allotted for hook and line fishing, pots, and bottom trawls. Fossils have been found in Canada near a Steller Sea lion fossil dating to the Pleistocene.
Gadus is a genus of demersal fish in the family Gadidae, commonly known as cod, although there are additional cod species in other genera. The best known member of the genus is the Atlantic cod.
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.
The Angolan epauletted fruit bat is a species of megabat in the family Pteropodidae. It is found in Angola and Namibia. Its natural habitat is savanna.
Mormyrus macrocephalus is a species of ray-finned fish in the family Mormyridae.
Haplochromis macrocephalus is a species of cichlid endemic to the Tanzanian portion of Lake Victoria where it is found in Mwanza Gulf and Speke Gulf. This species can reach a length of 10.6 centimetres (4.2 in) SL.
Histioteuthis bonnellii, the umbrella squid, is a species of cock-eyed squid belonging to the family Histioteuthidae.
Psychrolutes is a genus of marine ray-finned fishes belonging to the family Psychrolutidae, the fatheads and toadfishes. Though found predominantly in the deep sea, a handful of species are present in the intertidal regions of the North Pacific rim. In June 2003, During the NORFANZ Expedition north-west of New Zealand, scientists trawled a specimen of P. microporos at a depth between 1,013 metres (3,323 ft) and 1,340 metres (4,400 ft) on the Norfolk Ridge.
The blob sculpin is a species of deep-sea fish of the family Psychrolutidae. It feeds mainly on crustaceans, molluscs, and sea pens.
Atopochilus macrocephalus is a species of upside-down catfish endemic to Angola where it occurs in the Kwango River in the vicinity of Fort Don Carlos. This species grows to a length of 7.5 centimetres (3.0 in) SL. It is consumed for food and is threatened by human activities with very extensive diamond mining being the most significant threat.
Millerigobius macrocephalus is a species of goby native to coastal waters of the Adriatic Sea, the Levant Sea, the western Mediterranean and the Aegean Sea where it occurs in lagoons and shallow inshore waters to about 4 metres (13 ft) in depth with stones to provide shelter. This species can reach a length of 4.3 centimetres (1.7 in) SL. It is currently the only known member of its genus.
The Caspian tadpole goby is a species of goby which is widespread in the basin of the Caspian Sea, specifically in the near-estuary zone of the rivers and in small bays. It is a common species in the Volga River delta near Astrakhan, occurred in the deltas of rivers Terek, Ural, Samur. During the warmer months, this species prefers to live at depths of from .5 to 10 metres, moving in the colder months to depths of 20 to 25 metres. It can reach a length of 11.6 centimetres (4.6 in) TL.
Dialommus macrocephalus, the Foureye rockskipper, is a species of labrisomid blenny native to the eastern Pacific Ocean from Baja California, Mexico to Colombia. It inhabits the intertidal zone and is capable of leaving the water in search of land-dwelling prey. It feeds on invertebrates including crabs. This species can reach a length of 11 centimetres (4.3 in) TL.
Luciobrama macrocephalus, the long spiky-head carp, is a species of cyprinid fish that is found in China and Vietnam. It is the only member of its genus, and is classified as data deficient by the IUCN. It is found in rivers and lakes. Larger fish, over 30 centimetres (12 in) live nearer the bottom and the smaller specimens are found higher in the water column. They are partially migratory. It has not been recorded from its spawning sites since 1988.
Psychrolutes microporos is a species of deepwater marine fish in the family Psychrolutidae, commonly known as a blobfish or fathead. It is found in the abyssal zone in waters around Australia and New Zealand.
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.
Psychrolutes inermis is a species of marine ray-finned fish belonging to the family Psychrolutidae, the fatheads. This is a bathydemersal fish which is found in the eastern Atlantic from Mauritania south to the southwestern Indian Ocean from South Africa and Mozambique. It has been recorded at depths from 550 to 1,550 m.
Psychrolutes subspinosus is a species of marine ray-finned fish belonging to the family Psychrolutidae, the fatheads. This is a bathydemersal fish which is found at depths of 1,337 to 1,750 m in the northeastern Atlantic Ocean off Iceland. This species reaches a maximum published total length of 12 cm (4.7 in)
Kryptopterus macrocephalus, the striped glass catfish, is a species of sheatfish native to the Malay Peninsula, Sumatra and Borneo in Southeast Asia. This species, large for its genus, grows to a length of 9.7 centimetres (3.8 in) SL.
The soft sculpin is a species of marine ray-finned fish belonging to the family Psychrolutidae, the fatheads and toadfishes. This species is found in the North Pacific Ocean from the the Bering Sea to the southern Puget Sound in Washington. It is found at depths between 0 and 225 m, mainly in rocky substrates and among sponges, it has also been reported from soft substrates. This species reaches a maximum published total length of 8.3 cm (3.3 in).
