Webster's Revised Unabridged Dictionary · 1913

Coalfish

Coalfish , noun

[Named from the dark color of the back.]

(a)
(Zoology) The pollock; -- called also, coalsey, colemie, colmey, coal whiting, etc. See Pollock.
(b)
(Zoology) The beshow or candlefish of Alaska.
(c)
(Zoology) The cobia.