Jaydia quartus (Fraser 2000)

Generally smooth to crenulate preopercle edge, one predorsal scale, 13 well-developed gill rakers on first arch, fourth dorsal spine the longest, and a single dark spot, perhaps appearing as an ocellus in life, on the body just behind the opercle flap. Remarks: caudal fin slightly rounded.

Mouthbrooders (Ref. 240). Distinct pairing during courtship and spawning (Ref. 205).

Dorsal spines (total): 8; Dorsal soft rays (total): 9; Analspines: 2; Analsoft rays: 8; Vertebrae: 24