scubaseason

Napoleon Wrasse

Cheilinus undulatus

Sighting evidence at Manta Scramble, Ishigaki Island

Napoleon Wrasse

Photo: David Roche · CC BY-NC

A large resident Napoleon wrasse has patrolled the Manta Scramble ridge for over a decade and is well known to local operators, approaching divers with apparent curiosity before moving on to feed on hard-shelled invertebrates. Napoleon wrasse are listed as Endangered globally due to heavy fishing pressure from the live reef food fish trade, making protected sites like Ishigaki critical refugia for the species. Their large size — individuals can exceed 1.5 metres and 190 kilograms — requires decades of growth, so the presence of old adults indicates long-term habitat stability.

Evidence at this site

No confirmed records on file at this site

Napoleon Wrasse is listed as a curated species here based on historical reports.

How is this calculated?

Sighting evidence is compiled from iNaturalist observation records within a set proximity radius, filtered for quality-grade observations. “Last confirmed” is the date of the most recent research-grade record. Record count covers a rolling 24-month window. Confidence reflects record count, recency, and consistency of seasonal signal.

Also seen at other sites