scubaseason
Least Concern· population stable· assessed 2015

Hairy Frogfish

Antennarius striatus

Sighting evidence at Osezaki, Izu Peninsula

Hairy Frogfish

Photo: Richard Ling · CC BY-NC-ND

Masters of ambush predation, hairy frogfish mimic sponges and algae so precisely they are almost invisible against Osezaki's encrusted boulders. They lure prey with a modified dorsal spine that wriggles like a small worm, striking in as little as six milliseconds — one of the fastest strikes in the animal kingdom.

Evidence at this site

No confirmed records on file at this site

Hairy Frogfish 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