Species: Apogon leptocaulus, Slendertail cardinalfish

Apogon leptocaulus Gilbert, 1972

Slendertail cardinalfish

 Body oblong, compressed; head large, snout short; eye large; moderately large oblique mouth that opens at the front; top jaw wide, partly concealed when mouth is closed, scaleless; jaws with bands of small teeth, no canines; front and sides of roof of mouth with a band of small teeth; preopercle serrated, lower membranous flap extends beyond edge of preoperculum; 18-20 gill rakers; dorsal fin VI + I, 9; anal fin II, 8; inner pelvic ray mostly not attached to body; pectoral 12; tail fin slightly concave; body scales rough; 3-8 scales on  center of nape before dorsal fin; lateral line scales not enlarged; lateral line complete, extends onto base of tail fin.