Psednos mexicanus is a species of snailfish found in the eastern-central Pacific Ocean.Chernova, N.V. and D.L. Stein, 2002. Ten new species of Psednos (Pisces, Scorpaeniformes: Liparidae) from the Pacific and North Atlantic oceans. Copeia 2002(3):755-778.
Size This species reaches a length of .
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