Fins. Dorsal fin origin behind vertical to origin of pelvic fin and in posterior half of body (not including caudal
fin). Dorsal fin with 2–3 simple rays and 7–8 branched rays, straight to slightly concave in most specimens; convex
with middle and posterior branched rays lengthened in presumed alpha male, the posterior tip sometimes surpasses
vertical from posterior base of anal fin in presumed alpha male (Figs. 1B and E). Anal-fin origin at vertical from
6th branched ray to behind last branched dorsal-fin ray at distance of up to 3 times width between two dorsal
branched rays,. Anal fin with 2–3 simple rays and 9–11 branched rays; first 3–4 branched rays elongated, creating
concave margin; in presumed alpha male margin is less concave or straight. Lower lobe of caudal fin longer or
equal to upper lobe. Pectoral fin large, with 12–15 rays, often reaches anterior base of pelvic fin. Pelvic-fin origin
far in front of dorsal-fin origin, anterior ray not reaching origin of anal fin, with 8–9 rays, posterior ray generally
not reaching anterior origin of anal fin but often reaching anterior origin of anal fin in presumed developed male.