25 plates in median series. Ventral plates forming a right angle on caudal peduncle
with dorsal margin of plates concave forming a strong keel along lower portion of caudal
peduncle. Dorsal plate series bent between dorsal and adipose fins to form slight ridge,
ridges on two sides converging just posterior to insertion of adipose-fin spine. Inframedian
plate series bent in middle from cleithrum to insertion of pelvic-fin forming slight keel.
Abdomen naked except for some small, embedded plates laterally between pectoral and
pelvic fins. Five rows of plates on caudal peduncle.