Peacock Flounder Identification Guide

Key identification features

• Left-eyed flatfish, meaning both eyes sit on the left side of the head
• Sandy brown to olive body dotted with small, bright electric-blue rings and spots
• Eyes are widely spaced with a raised bony ridge between them
• Capable of rapidly shifting color and pattern to blend with the seafloor
• Grows to roughly 18 inches (45 cm)

Common look-alikes

• Flowery flounder shares an almost identical blue-ringed pattern, but it lives in the Indo-Pacific rather than the Atlantic/Caribbean, and breeding males grow an elongated eye-stalk extension that peacock flounders lack.
• Eyed flounder is smaller and marked with fewer, larger dark ocelli rather than the dense field of tiny blue rings seen on a peacock flounder.
• Ocellated flounder (Bothidae relatives) tends to show bolder solitary eyespots instead of the fine, uniform speckling pattern.

Where you'll see one

Peacock flounders lie buried or resting on sandy patches, seagrass beds, and rubble near coral reefs throughout the tropical Atlantic and Caribbean, typically in shallow water from the surf zone down to about 100 feet, where their color-changing skin lets them vanish against the bottom.