Spotfin jawfish
(Opistognathus robinsi)
Image source: Pauline Walsh Jacobson | inaturalist.org
General data
Western Central Atlantic: USA and the Bahamas.
Max lengt : 13 cm SL
Dorsal spines (total): 10 - 11; Dorsal soft rays (total): 15-18; Anal spines: 2-3; Anal soft rays: 16 - 18; Vertebrae: 29 - 31.
Anterior nostril a short tube with simple cirrus on posterior rim; posterior end of maxilla of adult males produced as a thin flexible lamina that usually extends beyond posterior margin of opercle; spinous dorsal fin with black spot encircled by broad white ring.
Adult males with inner lining of maxilla and adjacent membranes with prominent black stripe (stripe usually absent or light brown and poorly developed in females. Buccal pigmentation consisting of a large dark area widely surrounding esophageal opening, including medial area between upper pharyngeal tooth patches.
Caudal vertebrae typically 20.
