Peacock Flounder in Cozumel
Peacock Flounder (*Bothus lunatus*) in Cozumel: how to identify it, where it is reliably seen, and what it is commonly confused with.
A flat oval lying on the sand with both eyes on the same upward-facing side, scattered with pale blue rings and spots. Males have very long pectoral fin extensions.
Quick ID
| Scientific name | Bothus lunatus |
|---|---|
| Group | Camouflaged & Odd-Shaped Fish |
| Typical size | 20–40 cm |
| Depth range | 2–25 m |
| When to see it | Year-round |
| Active | Daytime |
| Conservation status | Least Concern |
| Notes | — |
Where You Will See It In Cozumel
Sand between coral heads at El Cielo, Playa Corona and Molas Shallow Reef — usually seen only when it moves.
Reliable sites: El Cielo, Playa Corona, Molas Shallow Reef.
Behaviour
Changes colour and pattern within seconds to match the substrate underneath it, and buries itself with a flick of the fins leaving only the eyes exposed. Born with an eye on each side; one migrates across the skull as it matures.
Commonly Confused With
- Other flounders and soles — The pale blue rings and spots are the peacock flounder's marker.
- Flying gurnard — The gurnard sits up on its fins rather than lying flat.
Diving Etiquette And Safety
Nothing required. Do not fan the sand to make it move.
Part of the Cozumel marine life guide · see Cozumel dive sites · plan your Cozumel dive trip
Photo: Becky A. Dayhuff, Public domain, via Wikimedia Commons.
