Sparidae: posterior tip of premaxilla overlapping maxilla at hind end of mouth (maxilla overlapping premaxilla
in Lethrinidae); more than X dorsal-fin spines (always X in Lethrinidae); cheek always scaly (naked in
Lethrinus but scaly in the other genera of Lethrinidae).
Haemulidae: scales always present between eye and mouth (absent in that area in Lethrinidae); 2 or more
pores present on chin; second anal-fin spine often very strong.
ventral view of head
Plectorhinchus
p