Shell flat, dull brown above, with above 10 major ribs that project from the margin. Interior with a broad black margin and a pink-brown center. Juveniles are yellow, with iridescent green flecks.
About 100 mm.
Lives in the mid-shore and feeds on a range of algae. Aggressively attacks small predators, slamming its shell down to break their shells or cut off their feet. Changes sex, being first male, and then female in the second or third year. Overexploited in the Transkei, where large individuals (mainly females) are harvested for food. A flatworm, Notoplana patellarum, lives under its shell.
Two Oceans: A Guide to the Marine Life of Southern Africa (1994, 2016)
F*CK FISH 