The
cusk-eels familyIn biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus...
(
Ophidiidae) are a group of marine bony fishes in the
orderIn scientific classification used in biology, the order is# a taxonomic rank used in the classification of organisms. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus, and species, with order fitting in between class and family...
OphidiiformesOphidiiformes is an order of ray-finned fish that includes the cusk eels , pearlfishes , brotulas , and others....
. The scientific name is from
GreekGreek , an independent branch of the Indo-European family of languages, is the language of the Greeks. Native to the southern Balkans, it has the longest documented history of any Indo-European language, spanning 34 centuries of written records. In its ancient form, it is the language of classical...
ophis meaning "snake", and refers to their
eelTrue eels are an order of fish, which consists of four suborders, 19 families, 110 genera and approximately 600 species. Most eels are predators...
-like appearance. However, they can be distinguished from true
eelTrue eels are an order of fish, which consists of four suborders, 19 families, 110 genera and approximately 600 species. Most eels are predators...
s of the order Anguilliformes by the ventral fins, which are developed into a forked
barbelA barbel on a fish is a slender, whiskerlike tactile organ near the mouth. Fish that have barbels include the catfish, the carp, the goatfish, sturgeon, and some species of shark...
-like organ below the mouth in the cusk-eels; in the true eels by contrast they are never well-developed and usually missing entirely.
They are found in temperate and tropical oceans throughout the world.
The
cusk-eels familyIn biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus...
(
Ophidiidae) are a group of marine bony fishes in the
orderIn scientific classification used in biology, the order is# a taxonomic rank used in the classification of organisms. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus, and species, with order fitting in between class and family...
OphidiiformesOphidiiformes is an order of ray-finned fish that includes the cusk eels , pearlfishes , brotulas , and others....
. The scientific name is from
GreekGreek , an independent branch of the Indo-European family of languages, is the language of the Greeks. Native to the southern Balkans, it has the longest documented history of any Indo-European language, spanning 34 centuries of written records. In its ancient form, it is the language of classical...
ophis meaning "snake", and refers to their
eelTrue eels are an order of fish, which consists of four suborders, 19 families, 110 genera and approximately 600 species. Most eels are predators...
-like appearance. However, they can be distinguished from true
eelTrue eels are an order of fish, which consists of four suborders, 19 families, 110 genera and approximately 600 species. Most eels are predators...
s of the order Anguilliformes by the ventral fins, which are developed into a forked
barbelA barbel on a fish is a slender, whiskerlike tactile organ near the mouth. Fish that have barbels include the catfish, the carp, the goatfish, sturgeon, and some species of shark...
-like organ below the mouth in the cusk-eels; in the true eels by contrast they are never well-developed and usually missing entirely.
They are found in temperate and tropical oceans throughout the world. They live close to the sea bottom, at below depth. One species,
Abyssobrotula galatheaeAbyssobrotula galatheae is a species of cusk eel in the family Ophidiidae, and the only species in its genus. It is the deepest-living fish known; one specimen, trawled from a depth of 8,370 m in the Puerto Rico Trench in 1970, holds the record for the deepest fish ever captured...
, was recorded at the bottom of the
Puerto Rico trenchThe Puerto Rico Trench is an oceanic trench located on the boundary between the Caribbean Sea and the Atlantic Ocean. The trench is associated with a complex transition between the subduction zone to the south along the Lesser Antilles island arc and the major transform fault zone or plate boundary...
, making it the deepest recorded fish at .
The largest species,
Lamprogrammus shcherbachevi, grows up to in length, but most species are shorter than a metre. Unlike their close relatives, the viviparous brotulas of the Bythitidae, they are egg-laying, and the larvae live amongst the
planktonPlankton consist of any drifting organisms that inhabit the pelagic zone of oceans, seas, or bodies of fresh water. Plankton are defined by their ecological niche rather than their phylogenetic or taxonomic classification...
, relatively close to the surface.
A few species are fished commercially, most notably the
Pink Cusk-eelThe pink cusk-eel, Genypterus blacodes, is a cusk eel of the genus Genypterus, found in southern Australia, Chile, Brazil, South Africa and around New Zealand except the east coast of Northland, in depths of a few metres to 1000 metres...
,
Genypterus blacodes.
Genera
The cusk-eel family contains about 240 species, grouped into 50 genera:
Subfamily Brotulinae
- Genus Brotula
Brotulas are a family, Bythitidae, of ophidiiform fishes, also known as viviparous brotulas as they bear live young. They are found in tropical and subtropical waters throughout the world...
– typical brotulas (5 species)
Subfamily Brotulotaenilinae
- Genus Brotulotaenia (4 species)
Subfamily Neobythitinae
- Genus Abyssobrotula (1 species)
- Genus Acanthonus Günther, 1878 – Bony-eared Assfish (1 species)
- Genus Alcockia (1 species)
- Genus Apagesoma (3 species)
- Genus Barathrites Zugmayer
Erich Johann Georg Zugmayer was an Austrian zoologist and ichthyologist-Species described by Zugmayer:* Benthalbella infans Zugmayer, 1911* Cetostoma regani Zugmayer, 1914...
, 1911 (2 species)
- Genus Barathrodemus Goode & Bean, 1883 (2 species)
- Genus Bassogigas Goode & Bean, 1896 (1 species)
- Genus Bassozetus Gill, 1883 – Typical assfishes (13 species)
- Genus Bathyonus (3 species)
- Genus Benthocometes (1 species)
- Genus Dannevigia – Australian Tusk (1 species)
- Genus Dicrolene Goode & Bean, 1883 (15 species)
- Genus Enchelybrotula (2 species)
- Genus Epetriodus – Needletooth Cusk (1 species)
- Genus Eretmichthys Garman, 1899 (1 species)
- Genus Glyptophidium (7 species)
- Genus Holcomycteronus Garman, 1899 (6 species)
- Genus Homostolus – Filament Cusk (1 species)
- Genus Hoplobrotula (3 species)
- Genus Hypopleuron – Whiptail Cusk (1 species)
- Genus Lamprogrammus Alcock, 1891 (5 species)
- Genus Leptobrotula (1 species)
- Genus Leucicorus (2 species)
- Genus Luciobrotula Smith & Radcliffe, 1913 (4 species)
- Genus Mastigopterus (1 species)
- Genus Monomitopus Alcock, 1890 (14 species)
- Genus Neobythites Goode & Bean, 1885 (50 species)
- Genus Neobythitoides (1 species)
- Genus Penopus Goode & Bean, 1896 (1 species)
- Genus Petrotyx (2 species)
- Genus Porogadus Goode & Bean, 1885 (13 species)
- Genus Pycnocraspedum (5 species)
- Genus Selachophidium – Gunther's Cusk-eel (1 species)
- Genus Sirembo (3 species)
- Genus Spectrunculus – Pudgy Cusk-eel (1 species)
- Genus Spottobrotula (2 species)
- Genus Tauredophidium (1 species)
- Genus Typhlonus (1 species)
- Genus Ventichthys – East-Pacific Ventbrotula (1 species)
- Genus Xyelacyba Cohen, 1961 – Gargoyle Cusk (1 species)
Subfamily Ophidiinae
- Genus Cherublemma – Black Brotula (1 species)
- Genus Chilara – Spotted Cusk-eel (1 species)
- Genus Lepophidium Gill, 1895 (13 species)
- Genus Genypterus (6 species)
- Genus Ophidion
Ophidion mey refer to:* Ophidion, a genus of orchids.* Ophidion, a genus of cusk eels....
(27 species)
- Genus Otophidium (4 species)
- Genus Parophidion (2 species)
- Genus Raneya – Banded Cusk-eel (1 species)