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n. pl. dealfish or deal·fish·es
Any of several ribbonfishes of the genus Trachipterus, especially T. arcticus of the Atlantic Ocean, which can attain a length of 3 meters (9.8 feet).
n, pl -fish or -fishes
(Animals) any deep-sea teleost fish of the genus Trachipterus, esp T. arcticus, related to the ribbonfishes and having a very long tapelike body and a fan-shaped tail fin
n., pl. -fish•es, (esp. collectively) -fish.
a ribbonfish, esp. Trachipterus arcticus.