(MCT) — MIAMI — Spearfisherman Greg Caterino was chasing a black grouper off Pacific Reef Light on Dec. 23 when his quarry disappeared under a 90-foot-deep ledge. Suddenly, the fish’s head popped out from the hole where it was hiding, and the diver from Tavernier shot it.

But when Caterino and dive buddy Wayne Grammes of Palmetto Bay retrieved the 15-pounder, they saw it wasn’t a black grouper at all. It had an odd-shaped head, a hump back and polka dots. They swam back to Grammes’ boat, piloted by Dave Cantrell of Deerfield Beach, shaking their heads in surprise the whole way.