Ariosoma nigrimanum is an eel in the family Congridae (conger/garden eels).Ariosoma nigrimanum at www.fishbase.org. It was described by John Roxborough Norman in 1939.Norman, J. R., 1939 (25 Nov.) [ref. 6556] Fishes. The John Murray Expedition 1933-34. Scientific Reports, John Murray Expedition v. 7 (no. 1): 1-116. It is a tropical, marine eel which is known from the Gulf of Aden, in the western Indian Ocean. It is known to dwell at a maximum depth of 220 metres. Males can reach a maximum total length of 33.5 centimetres.
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