What is "atlantic croaker"

Sciaenoid \Sci*[ae]"noid\, a. [L. sci[ae]na a kind of fish (fr. Gr. ?) + -oid.] (Zo["o]l.) Of or pertaining to the Sci[ae]nid[ae], a family of carnivorous marine fishes which includes the meagre ( Sciaena umbra or Sciaena aquila), and fish of the drum and croaker families. The croaker is so called because it may make a croaking noise by use of its bladder; the Atlantic croaker ( Micropogonias undulatus, formerly Micropogon undulatus) and the squeteague are a members of the croaker family, and the kingfish is a drum.

The Atlantic croaker (Micropogonias undulatus) is a species of marine ray-finned fish belonging to the family Sciaenidae and is closely related to the black drum ( Pogonias cromis), the silver perch ( Bairdiella chrysoura), the spot croaker ( Leiostomus xanthurus), the red drum ( Sciaenops ocellatus), the spotted seatrout ( Cynoscion nebulosus), and the weakfish ( Cynoscion regalis). This fish is commonly found in sounds and estuaries from Massachusetts to the Gulf of Mexico.