Cottunculus tubulosus is a species of fish in the blobfishe family Psychrolutidae. It is found in the north-eastern Atlantic Ocean.Byrkjedal, I. and A.M. Orlov, 2007. A new species of Cottunculus (Teleostei: Psychrolutidae) from the Mid Atlantic Ridge. Zootaxa 1580:63-68. It was described in 2007 by Ingvar Byrkjedal and Alexei Markovich Orlov.
Description This species reaches a length of .
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