Grey cutthroat eel
Drawing by Dr Tony Ayling
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Anguilliformes Family: Synaphobranchidae Genus: Synaphobranchus Species: S. affinis
Binomial name
Synaphobranchus affinis Günther, 1877

The grey cutthroat eel, Synaphobranchus affinis, is a cutthroat eel, the only species in the genus Synaphobranchus. It is found around the world at depths below 1,000 m. Its length is up to 160 cm. For other uses, see Scientific classification (disambiguation). ... Phyla Subkingdom Parazoa Porifera (sponges) Subkingdom Agnotozoa Placozoa Orthonectida Rhombozoa Subkingdom Metazoa Radiata Cnidaria Ctenophora - Comb jellies Bilateria Protostomia Acoelomorpha Platyhelminthes - Flatworms Nemertina - Ribbon worms Gastrotricha Gnathostomulida - Jawed worms Micrognathozoa Rotifera - Rotifers Acanthocephala Priapulida Kinorhyncha Loricifera Entoprocta Nematoda - Roundworms Nematomorpha - Horsehair worms Cycliophora Mollusca - Mollusks Sipuncula - Peanut worms Annelida - Segmented... Typical Classes Subphylum Urochordata - Tunicates Ascidiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... Orders See text The Actinopterygii are the ray-finned fish. ... The Anguilliformes (true eels) are an order of bony fishes. ... Genera Atractodenchelys Diastobranchus Dysomma Dysommina Haptenchelys Histiobranchus Ilyophis Linkenchelys Meadia Simenchelys Synaphobranchus Thermobiotes Cutthroat eels are a family, Synaphobranchidae, of eels. ... In biology, binomial nomenclature is the formal method of naming species. ... Albrecht Carl Ludwig Gotthilf Günther. ... Genera Atractodenchelys Diastobranchus Dysomma Dysommina Haptenchelys Histiobranchus Ilyophis Linkenchelys Meadia Simenchelys Synaphobranchus Thermobiotes Cutthroat eels are a family, Synaphobranchidae, of eels. ... The metre, or meter (U.S.), is a measure of length. ...

The grey cutthroat eel is a moderately deep-bodied eel with a pointed snout, with both the dorsal and anal fins beginning about a third of the way from the front of the body. The gill appertures are short horizontal slits low on the body that join together beneath the throat. The mouth has many rows of small teeth, with larger teeth on the vomer on the roof of the mouth. Scale arrangement is similar to that of the basketwork eel. Dorsal Fin of the Orca A dorsal fin is a fin located on the backs of fishes, whales, dolphins and porpoises. ... Fish anatomy is primarily governed by the physical characteristics of water, which is much denser than air, holds a relatively small amount of dissolved oxygen, and absorbs light more than does air. ... gills of a Smooth Newt Gills inside of a tuna head In aquatic organisms, gills are a respiratory organ for the extraction of oxygen from water and for the excretion of carbon dioxide. ... The vomer bone is one of the unpaired facial bones of the skull. ... In most biological nomenclature, a scale (Greek lepid, Latin squama) is a small rigid plate that grows out of an animals skin to provide protection. ...

The colour is a uniform grey to grey-brown with black edges to the fins.

Very little else is known.

References

• Synaphobranchus affinis (TSN 161580). Integrated Taxonomic Information System. Accessed on 19 March 2006.
• "Synaphobranchus affinis". FishBase. Ed. Ranier Froese and Daniel Pauly. January 2006 version. N.p.: FishBase, 2006.
• Tony Ayling & Geoffrey Cox, Collins Guide to the Sea Fishes of New Zealand, (William Collins Publishers Ltd, Auckland, New Zealand 1982) ISBN 0-00-216987-8