The saccopharyngiformes are a derived lineage of unusual eels within the order Anguilliformes, and includes families Cyematidae, Monognathidae, Eurypharyngidae, Saccopharyngidae, and the proposed family Neocyematidae. Most of the fish in this group are deep-dwelling and rarely seen, typically known from only a handful of specimens. Species include recognizable fish such as pelican eels, bobtail eels, and gulper eels. Some can live deep in the ocean, well into the aphotic zone, approximately 500–1800 meters deep. Extensive research has not been conducted on them due to being indirectly observed, with some species known only from their larvae. All families except for the exceptionally rare individuals of proposed family Neoceymatidae are found in all major oceans.
Synbranchiformes, often called swamp eels, is an order of ray-finned fishes that are eel-like but have spiny rays, indicating that they belong to the superorder Acanthopterygii.
Neopterygii is a subclass of ray-finned fish (Actinopterygii). Only a few changes occurred during the evolution of neopterygians from the earlier actinopterygians. They appeared sometime in the Late Permian, before the time of the dinosaurs. The neopterygians were a very successful group of fish, because they could move more rapidly than their ancestors. Their scales and skeletons began to lighten during their evolution, and their jaws became more powerful and efficient. While electroreception and the ampullae of Lorenzini are present in all other groups of fish, with the exception of hagfish, neopterygians have lost this sense, even if it has later been re-evolved within Gymnotiformes and catfishes, which possess nonhomologous teleost ampullae.
Moray eels, or Muraenidae, are a family of eels whose members are found worldwide. There are approximately 200 species in 15 genera which are almost exclusively marine, but several species are regularly seen in brackish water, and a few are found in fresh water.
The superorder Elopomorpha contains a variety of types of fishes that range from typical silvery-colored species, such as the tarpons and ladyfishes of the Elopiformes and the bonefishes of the Albuliformes, to the long and slender, smooth-bodied eels of the Anguilliformes. The one characteristic uniting this group of fishes is they all have leptocephalus larvae, which are unique to the Elopomorpha. No other fishes have this type of larvae.
Gymnothorax is a genus of fish in the family Muraenidae found in Atlantic, Indian and Pacific Ocean. With more than 120 species, it the most speciose genus of moray eels.
The barred moray, also known as the banded moray, the dark-banded eel, the girdled moray, the girdled reef eel, the many banded moray eel, the ringed moray, the ringed reef moray, the striped moray and the zebra eel,) is a moray eel of the family Muraenidae. It was described by John Richardson in 1845, originally under the genus Muraena. It is a marine, tropical eel which is known from the Indo-Pacific, including the Red Sea, East Africa, the Hawaiian Islands, the Marquesan Islands, the Tuamoto Islands, the Ryukyu Islands, and the Great Barrier Reef. It dwells at a depth range of 2 to 20 metres, and leads a benthic lifestyle in reefs and shallow lagoons. Males can reach a maximum total length of 72.3 centimetres (28.5 in).
The European conger is a species of conger of the family Congridae. It is the largest eel in the world and native to the northeast Atlantic, including the Mediterranean Sea.
The carpet eel-blenny, also known as the green wolf eel or green wolf eel blenny, is a relatively large species of dottyback found in coastal parts of the Indo-West Pacific, including coral reefs, among rocks, seagrass beds, tidal flats and in brackish habitats. Despite the names, it is unrelated to the true wolf eel of the North Pacific, the true eel of the order Anguilliformes and the true blennies of the suborder Blennioidei.
An eel is a ray-finned fish belonging to the order Anguilliformes, which consists of eight suborders, 19 families, 111 genera, and about 800 species. Eels undergo considerable development from the early larval stage to the eventual adult stage, and most are predators.
Scuticaria okinawae is a moray eel found in the Pacific and Indian Oceans. It is commonly known as the shorttailed snake moray, shorttail moray, Seale's moray eel, or the Bennett's moray.
Gymnothorax emmae is a moray eel found in tropical ocean waters off Vietnam. It is found in coral reefs at a depth range of 14m-100m in the South China Sea. The maximum length of this species 43.0 cm.
Chlopsis is a genus of eels of the family Chlopsidae.
The Flores mud moray is an eel in the family Muraenidae. It was described by John E. McCosker and John Ernest Randall in 2008. It is a tropical, marine eel which is known from Indonesia, in the western Pacific Ocean. It is known to dwell at a depth range of 3–4 m. Males can reach a maximum total length of 29.9 cm.
Gymnothorax hansi is an eel in the family Muraenidae. It was described by Phillip C. Heemstra in 2004. It is a tropical, marine eel which is known from reefs around Grand Comoro Island, in the Indian Ocean. It is known to dwell at a maximum depth of 143 m (469 ft).
The black body moray is an eel in the family Muraenidae. It was described by Loh Kar-Hoe, Shao Kwang-Tsao, and Chen Hong-Ming in 2011. It is a tropical, marine eel which is known from southeastern Taiwan, in the Pacific Ocean. Males are known to reach a maximum total length of 49.6 cm, while females are known to reach a maximum of 50.4 cm.
The Shao's moray is an eel in the family Muraenidae. It is a marine, temperate-water eel known from Taiwan, in the northwest Pacific Ocean. Males are known to reach a maximum total length of 60.8 cm.
Congroidei is a suborder of eels in the order Anguilliformes. It contains five families:
Muraenoidei is a suborder of eels in the order Anguilliformes which contains the following three families:
