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Webster 1913 Edition

Noun.

(Zool.)

A large, edible, deep-water food fish (

Lopholatilus chamaeleonticeps

) more or less thickly covered with large, round, yellow spots.

☞ It was discovered off the Eastern coast of the United States in 1880, and was abundant in 1881, but is believed to have become extinct in 1882.

A tilefish

tilefish ‎(countable and uncountable, plural tilefish or tilefishes)

Mostly small, perciform marine fish in the family Malacanthidae; an important food fish.
- 2008 January 30, Nick Fox, “Taking Worry Off the Plate”, in New York Times:
  The federal Food and Drug Administration and the Environmental Protection Agency advise women and children to avoid king mackerel, shark, swordfish and tilefish, and limit their consumption of some tuna.