Its body, which grows to about 20 inches [50 cm] in length, swells “until the fish is three times its usual size and has become a rigid, near-perfect sphere covered in spiky armor​—not a good design for swimming but decidedly discouraging to attackers.”
Mwili wake, ambao hukua kufikia urefu wa sentimeta 50 hivi, huvimba “mpaka samaki huyo ana ukubwa mara tatu wa saizi yake ya kawaida na amekuwa duara gumu, lililo karibu kabisa na kufunikwa na vazi la kivita lenye miiba—si muundo mzuri wa kuogelea bali. kuwakatisha tamaa washambuliaji."