scubaseason

Clearfin Lionfish

Pterois radiata

Sighting evidence at Irabu Blue Cave, Miyako Islands

Clearfin lionfish hang motionless beneath cave overhangs in the dimlit interior, relying on their cryptic patterning and venomous spines rather than escape behaviour when approached. They are nocturnally active predators that use the cave's sheltered recesses as daytime resting sites, moving to the reef slope at dusk to ambush small reef fish. The cave supports unusually high densities of this species, likely because the sheltered environment limits predation on the lionfish juveniles.

Evidence at this site

No confirmed records on file at this site

Clearfin Lionfish 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.