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Eels
Eels are ray-finned fish belonging to the order (biology), order Anguilliformes (), which consists of eight suborders, 20 Family (biology), families, 164 genus, genera, and about 1000 species. Eels undergo considerable development from the early larval stage to the eventual adult stage and are usually predators. The term "eel" is also used for some other eel-shaped fish, such as electric eels (genus ''Electrophorus''), swamp eels (order Synbranchiformes), and deep-sea spiny eels (family Notacanthidae). However, these other clades, with the exception of deep-sea spiny eels, whose order Notacanthiformes is the sister clade to true eels, convergent evolution, evolved their eel-like shapes independently from the true eels. As a main rule, most eels are marine. Exceptions are the catadromous genus Anguillidae, ''Anguilla'' and the Gymnothorax polyuranodon, freshwater moray, which spend most of their life in freshwater, the Fish migration#Classification, anadromous rice-paddy eel, whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnothorax Polyuranodon
''Gymnothorax polyuranodon'', commonly known as the freshwater moray, is a species of moray eel that is native to the Indo-Pacific region, including Sri Lanka, the Philippines, Indonesia, Papua New Guinea, the northern coastline of Australia, and various islands in the western Pacific. Other common names include the many-toothed moray, spotted freshwater moray, blackspotted moray, freshwater leopard moray, and freshwater tiger moray. Description ''Gymnothorax polyuranodon'' was named by Pieter Bleeker in 1853. The species can reach a maximum length of 1.5 metres (4.9 feet), but it is rarely seen larger than 1 metre (3 feet). Its colouration is yellow or light tan, covered with dark brown spots and blotches. The freshwater moray has very small teeth in proportion to the size of its head, and, like all moray eels, is carnivorous. Its diet consists almost entirely of fish, and occasionally shrimp, bivalves, and worms, and it prefers to eat live food. Like many moray eels, it has poor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anguilla Dieffenbachii
The New Zealand longfin eel (''Anguilla dieffenbachii'') is a species of freshwater eel that is endemic to New Zealand. It is the largest freshwater eel in New Zealand and the only endemic species – the other eels found in New Zealand are the native shortfin eel (''Anguilla australis''), also found in Australia, and the naturally introduced Australian longfin eel (''Anguilla reinhardtii''). Longfin eels are long-lived, migrating to the Pacific Ocean near Tonga to breed at the end of their lives. They are good climbers as juveniles and so are found in streams and lakes a long way inland. An important traditional food source for Māori (who name them ), longfin eel numbers are declining and they are classified as endangered, but over one hundred tonnes are still commercially fished each year. Description The easiest way to identify the longfin eel is by the length of its fins: the dorsal (top) fin is about two-thirds the length of the body and starts significantly further to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anguillidae
The Anguillidae are a family of ray-finned fish that contains the freshwater eels. All the extant species and six subspecies in this family are in the genus ''Anguilla'', and are elongated fish of snake-like bodies, with long dorsal, caudal and anal fins forming a continuous fringe. They are catadromous, spending their adult lives in freshwater, but migrating to the ocean to spawn. Eels are an important food fish and some species are now farm-raised, but not bred in captivity. Many populations in the wild are now threatened, and Seafood Watch recommend consumers avoid eating anguillid eels. Physical description Adult freshwater eels are elongated with tubelike, snake-shaped bodies. They have large, pointed heads and their dorsal fins are usually continuous with their caudal and anal fins, to form a fringe lining the posterior end of their bodies. They have relatively well developed eyes and pectoral fins compared to saltwater eels that they use to navigate and maneuver thro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Eel
The electric eels are a genus, ''Electrophorus'', of neotropical freshwater fish from South America in the family Gymnotidae, of which they are the only members of the subfamily Electrophorinae. They are known for their electric fish, ability to stun their prey by generating electricity, delivering shocks at up to 860 volts. Their electrical capabilities were first studied in 1775, contributing to the invention of the electric battery in 1800. Despite their name, electric eels are not closely related to the true eels (Anguilliformes) but are members of the electroreceptive knifefish Order (biology), order Gymnotiformes. This order is more closely related to catfish. In 2019, electric eels were split into three species: for more than two centuries before that, the genus was believed to be monotypic, containing only ''Electrophorus electricus.'' They are nocturnal, obligate air-breathing animals, with poor vision complemented by Electroreception and electrogenesis#Electrolocati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rice-paddy Eel
The rice-paddy eel (''Pisodonophis boro''; also known commonly as the Bengal's snake-eel, the estuary snake eel, or the snake eel) is an eel in the family Ophichthidae (worm-snake eels).''Pisodonophis boro'' at www.fishbase.org. It was described by in 1822, originally in the genus '' Ophisurus''.Hamilton, F., 1822 ef. 2031''An account of the fishes found in the river Ganges and its branches.'' Edinburgh & London. i-vii + 1-405, Pls. 1-39. It is a |
Stictorhinus
''Stictorhinus potamius'' is a species of freshwater eel in the family Ophichthidae. It is the only member of its genus. It is found in the major river basins of Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population .... References * Ophichthinae Fish described in 1975 {{Anguilliformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conger Conger Gervais
''Conger'' ( ) is a genus of marine congrid eels. It includes some of the largest types of eels, ranging up to or more in length, in the case of the European conger. Large congers have often been observed by divers during the day in parts of the Mediterranean Sea, and both European and American congers are sometimes caught by fishermen along the European and North American Atlantic coasts. The life histories of most conger eels are poorly known. Based on collections of their small leptocephalus larvae, the American conger eel has been found to spawn in the southwestern Sargasso Sea, close to the spawning areas of the Atlantic freshwater eels. "Conger" or "conger eel" is sometimes included in the common names of species of the family Congridae, including members of this genus. Description Congers have wide mouths with sturdy teeth, usually a variant of gray or black in coloration. They have no scales. Their body weight can reach over . Species * †'' Conger brevisulcus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnothorax Isingteena - Spotted Moray Eel - Aug 29 2016
''Gymnothorax'' is a genus of fish in the family Muraenidae found in Atlantic, Indian, and Pacific Oceans. With more than 120 species, it the most speciose genus of moray eels. notes that ''Gymnothorax'' as currently recognized is polyphyletic, but cautioned that comparative studies are needed before action is taken to resurrect generic synonyms of ''Gymnothorax''. Description Species in this genus are slender (most skinny one being '' Gymnothorax gracilicauda'' )and can get up to 6-8 feet. Like all moray eels have pharyngeal jaws. Species Both FishBase and World Register of Marine Species recognize a total of 128 valid species in the genus. However, each database includes three species that the other does not list, which are noted in the list below. * '' Gymnothorax afer'' Bloch, 1795 (Dark moray) * '' Gymnothorax albimarginatus'' ( Temminck & Schlegel, 1846) (White-margin moray) *'' Gymnothorax andamanensis'' * '' Gymnothorax angusticauda'' ( M. C. W. Weber ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monognathus Ahlstromi
''Monognathus ahlstromi'', the paddletail onejaw, is an ocean-dwelling eel found in the North Pacific Ocean off of the coast of the United States. It is found up to a depth of . It does not provide parental care. Little information is currently known about its habits or full distribution. Description The dorsal and anal fin Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish swim. Apart from the tail or caudal fin, fish fins have no direct connection with the back bone and are supported o ...s of ''Monognathus ahlstromi'' lack bony supports. Zipcodezoo.com. Retrieved on 2012-07-27. Etymology The fish is named in honor of ichthyologist[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelvic Fin
Pelvic fins or ventral fins are paired fins located on the ventral (belly) surface of fish, and are the lower of the only two sets of paired fins (the other being the laterally positioned pectoral fins). The pelvic fins are homologous to the hindlimbs of tetrapods, which evolved from lobe-finned fish during the Middle Devonian. Structure and function Structure In actinopterygians, the pelvic fin consists of two endochondrally-derived bony girdles attached to bony radials. Dermal fin rays ( lepidotrichia) are positioned distally from the radials. There are three pairs of muscles each on the dorsal and ventral side of the pelvic fin girdle that abduct and adduct the fin from the body. Pelvic fin structures can be extremely specialized in actinopterygians. Gobiids and lumpsuckers modify their pelvic fins into a sucker disk that allow them to adhere to the substrate or climb structures, such as waterfalls. In priapiumfish, males have modified their pelvic structures into ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slender Giant Moray
The slender giant moray or Gangetic moray, ''Strophidon sathete'', is the longest member of the family of moray eels. It is in the genus ''Strophidon''. The longest recorded specimen was caught in 1927, on the Maroochy River in Queensland; it measured This species is characterized by an elongated body, as well as brownish-grey Dorsum (anatomy), dorsal coloration which pales towards the ventral, venter. Distribution and habitat The slender giant moray is found in the Indo-Pacific, Indo-West Pacific Ocean from the Red Sea and East Africa to the western Pacific. It generally lives in the benthic muddy environments of marine and estuarine areas, including inner bays and rivers. References Notes * * * External links * {{Taxonbar, from=Q750850 Muraenidae Fish described in 1822 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pectoral Fin
Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish aquatic locomotion, swim. Apart from the tail or caudal fin, fish fins have no direct connection with the vertebral column, back bone and are supported only by muscles. Fish fins are distinctive anatomical features with varying structures among different clades: in ray-finned fish (Actinopterygii), fins are mainly composed of bone, bony spine (zoology), spines or ray (fish fin anatomy), rays covered by a thin stretch of fish scale, scaleless skin; in lobe-finned fish (Sarcopterygii) such as coelacanths and lungfish, fins are short rays based around a muscular central limb bud, bud supported by appendicular skeleton, jointed bones; in cartilaginous fish (Chondrichthyes) and jawless fish (Agnatha), fins are fleshy "flipper (anatomy), flippers" supported by a cartilaginous skeleton. Fins at different locations of the fish body serve different purposes, and are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
