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Grenadiers or rattails
Rattail or grenadier (Macrouridae sp.)
Rattail or grenadier (Macrouridae sp. )
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Gadiformes
Family: Macrouridae
Gilbert and Hubbs, 1916
Genera

See text. Chordates ( Phylum Chordata) are a group of Animals that includes the Vertebrates together with several closely related Invertebrates The Actinopterygii (the plural form of Actinopterygius) comprise the class of the ray-finned fishes. Gadiformes is an order of Ray-finned fish, also called the Anacanthini, that includes the Cod and its allies

This article is about the rattail fish. For the rat tail hairstyle, see Rattail (haircut) . A rattail is a Haircut that is characterized by a long "tail" of hair growing from the back of the head

Grenadiers or rattails (less commonly whiptails) are generally large, brown to black gadiform marine fish of the family Macrouridae. Gadiformes is an order of Ray-finned fish, also called the Anacanthini, that includes the Cod and its allies Fish are aquatic Vertebrate animals that are typically ectothermic (previously Cold-blooded) covered with scales, and equipped with two Found at great depths from the Arctic to Antarctic, members of this family are among the most abundant of the deep-sea fishes. The Arctic Ocean, located in the Northern Hemisphere and mostly in the Arctic north polar region is the smallest and shallowest of the world's five major The Southern Ocean, also known as the Great Southern Ocean, the Antarctic Ocean and the South Polar Ocean, comprises the southernmost waters of Grenadiers are perhaps best known for their cameo in the blockbuster film Titanic, where the fish are glimpsed during ROV reconnaissance of the wreck. Titanic is a 1997 Disaster film directed written co-produced and co-edited by James Cameron about the sinking of the RMS ''Titanic'' Remotely operated underwater vehicles (ROVs is the common accepted name for tethered underwater Robots in the offshore industry

The Macrouridae are a large and diverse family with some 34 genera and 383 species recognized (well over half of which are contained in just three genera, Caelorinchus, Coryphaenoides and Nezumia). Caelorinchus is a genus of Rattails currently with 114 described species Coryphaenoides is a genus of Rattails of the family Macrouridae. Nezumia is a genus of Rattails of the family Macrouridae. Species Common Atlantic grenadier, They range in length from approximately 10 cm in the graceful grenadier, Hymenocephalus gracilis]], to 1. A centimetre ( American spelling: centimeter, symbol cm) is a unit of Length in the Metric system, equal to one hundredth The graceful grenadier ( Hymenocephalus gracilis) is a species of Rattail. 5 m in the giant grenadier, Albatrossia pectoralis. The metre or meter is a unit of Length. It is the basic unit of Length in the Metric system and in the International The giant grenadier, Albatrossia pectoralis, is a very large Rattail, the only member of the Genus Albatrossia, found in the An important commercial fishery exists for the larger species, such as the giant grenadier and roundnose grenadier, Coryphaenoides rupestris. The family as a whole may represent up to 15 per cent of the deep-sea fish population.

Typified by large heads with large mouths and eyes, grenadiers have slender bodies that taper greatly to a very thin caudal peduncle or tail (excluding one species, there is no tail fin): this rat-like tail explains the common name rattail and the family name Macrouridae, from the Greek makros meaning "great" and oura meaning "tail". The Anatomy of Fish is primarily governed by the physical characteristics of Water, which is much denser than air holds a relatively small amount of dissolved Rats are various medium sized long-tailed Rodents of the superfamily Muroidea Greek (el ελληνική γλώσσα or simply el ελληνικά — "Hellenic" is an Indo-European language, spoken today by 15-22 million people mainly The first dorsal fin is small, high and pointed (and may be spinous); the second dorsal fin runs along the rest of the back and merges with the tail and extensive anal fin. A dorsal fin is a Fin located on the backs of some Fishes Whales Dolphins and Porpoises as well as the (extinct The Anatomy of Fish is primarily governed by the physical characteristics of Water, which is much denser than air holds a relatively small amount of dissolved The scales are small.

Giant grenadier, Albatrossia pectoralis
Giant grenadier, Albatrossia pectoralis

As with many deep-living fish, the lateral line system in grenadiers is well-developed; it is further aided by numerous chemoreceptors located on the head and lips, and chemosensory barbels underneath the chin. The giant grenadier, Albatrossia pectoralis, is a very large Rattail, the only member of the Genus Albatrossia, found in the The giant grenadier, Albatrossia pectoralis, is a very large Rattail, the only member of the Genus Albatrossia, found in the In Fish, the lateral line is a Sense organ used to detect movement and vibration in the surrounding water A chemosensor, also known as chemoreceptor, is a Sensory receptor that transduces a chemical signal into an Action potential. A barbel on a Fish is a slender whiskerlike tactile organ near the Mouth. Benthic species have gas bladders with unique muscles attached to them. The benthic zone is the ecological region at the lowest level of a Body of water such as an Ocean or a Lake, including the sediment surface and some sub-surface gas bladder (also fish maw, less accurately swim bladder or air bladder) is an internal organ that contributes to the ability of a Fish The animals are thought to use these muscles to "strum" their gas bladders and produce sound, possibly playing a role in courtship and mate location. Light-producing organs called photophores are present in some species; they are located in the middle of the abdomen, just before the anus and underneath the skin. A photophore is a light-emitting organ which appears as luminous spots on various marine animals including Fish and Cephalopods.

Living at depths from 200 to 6,000 m, rattails are the most common benthic fish of the deep (however, two genera are known to prefer the midwater). Rattails may be solitary or they may form large schools, as with the roundnose grenadiers. The benthic species are attracted to structural oases, such as hydrothermal vents, cold seeps, and shipwrecks. A hydrothermal vent is a Fissure in a planet's surface from which geothermally heated Water issues A cold seep (sometimes called a cold vent) is an area of the Ocean floor where Hydrogen sulfide, Methane and other Hydrocarbon -rich A shipwreck can refer to a wrecked ship or to the event that caused the wreck such as the striking of something that causes the ship to sink the stranding of the ship on rocks Rattails are thought to be generalists, feeding on smaller fish, pelagic crustaceans such as shrimp and amphipods, cumaceans and less often cephalopods and lanternfish. Structure of crustaceans As Arthropods crustaceans have a stiff Exoskeleton, which must be shed to allow the animal to grow ( Ecdysis or molting True shrimp are swimming decapod Crustaceans classified in the Infraorder Caridea, found widely around the world in both fresh Amphipoda (amphipods are an order of animals that includes over 7000 described Species of Shrimp -like Crustaceans ranging from 1 mm to 140 mm Cumacea is an order of small marine Crustaceans occasionally called hooded shrimps. The cephalopods ( Greek plural (kephalópoda "head-feet" are the Mollusc class Cephalopoda characterized by Lanternfishes (or myctophids, from the Greek mykter, "nose" and ophis, "serpent" are small Deep sea fish of As well as being important apex predators in the benthic habitat, some species are also notable as scavengers.

As few rattail larvae have been recovered, little is known of their life history. A larva ( Latin; plural larvae) is a juvenile form of Animal with indirect development, undergoing Metamorphosis (for example They are known to produce a large number (over 100,000) of tiny (1-2 mm in diameter) eggs made buoyant by lipid droplets. The Millimetre ( American spelling: millimeter, symbol mm) is a unit of Length in the Metric system, equal to Lipids are broadly defined as any fat- Soluble ( lipophilic) naturally-occurring Molecule, such as fats oils waxes cholesterol sterols fat-soluble The eggs are presumed to float up to the thermocline (the interface between warmer surface waters and cold, deeper waters) where they develop. The thermocline (sometimes metalimnion) is a thin but distinct layer in a large body of water such as an ocean or lake in which temperature changes more rapidly with depth The juveniles remain in shallower waters, gradually migrating to greater depths with age.

Spawning may or may not be tied to the seasons, depending on the species. At least one species, Coryphaenoides armatus, is thought to be semelparous; that is, the adults die after spawning. Reproduction is the Biological process by which new individual Organisms are produced Non-semelparous species may live to 56 years or more. The Macrouridae in general are thought to have low resilience; commercially exploited species may be overfished and this could soon lead to a collapse of rattail fisheries.

See also: List of fish common names, list of fish families

Family Macrouridae

References

Dictionary

rattail

-noun

  1. Any of the large dark-colored deep-sea fish of the Macrouridae family of ray-finned fish.
  2. A hairstyle characterized by a long lock of tail-like hair dangling from the back of the head.
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