Sentence:  The shallow water groups (Family Serranidae), including <WSD>gag</WSD> ("Mycteroperca microlepis"), black grouper ("M. bonaci"), scamp ("M. phenax"), and red grouper ("Epinephalus morio"), support major commercial and recreational fisheries in the southeastern United States. 
Meaning of the word marked with <WSD> tags:  (species), a species of grouper.