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This is an accepted version of this page This is the latest accepted revision, reviewed on 23 December 2024. Species of fish American eel Conservation status Endangered (IUCN 3.1) Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Anguilliformes Family: Anguillidae Genus: Anguilla Species: A. rostrata Binomial name Anguilla rostrata ...
Most eels live in the shallow waters of the ocean and burrow into sand, mud, or amongst rocks. A majority of eel species are nocturnal and thus are rarely seen. Sometimes, they are seen living together in holes, or "eel pits". Some species of eels live in deeper water on the continental shelves and over the slopes deep as 4,000 metres (13,000 ft).
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, evolved their eel ...
Ribbon eels are a diurnal species (active during the daytime). [2] Characterized by its long, thin body and high dorsal fins. The ribbon eel can easily be recognized by its expanded anterior nostrils and wide-open jaws. These eels can have up to 255 vertebrae in their back bone, making them one of the most narrow and elongated eel species known ...
These genera are in two sub-families, Muraeninae and Uropterygiinae, which are distinguished by the location of their fins. [27] In Muraeninae the dorsal fin is near the gill slits and runs down the back of the eel, and the anal fin is behind the anus. [27] In the Uropterygiinnae, both the dorsal and the anal fin are at the end of the tail. [27]
The Asian swamp eel has a scaleless, anguilliform body that grows to a meter or less, typically 25 to 40 cm as an adult. As a swamp eel, it has a tapering tail and blunt snout, and lacks pectoral and pelvic fins. The dorsal, anal, and caudal fins are rudimentary, with the caudal fin often absent. [4]
The dorsal and anal fins are similar in length. The body of the adult short-finned eel is long and snakelike, roughly tubular and the head is small, with the jaws reaching back to below the eye or further. The dorsal (top) and anal (bottom) fins are of roughly equal length. The colour varies considerably from one individual to another; a deep ...
The dorsal fin to anal fin ray ratio is approximately 1.5:1, leading to the dorsal fin typically being longer than the anal. The pectoral fins of cusk-eels are typically longer than the length of their head. Unlike true eels of the order Anguilliformes, cusk-eels have ventral fins that are developed into a forked barbel-like organ below the ...