Least Concern· population trend unknown· assessed 2024

Blackfin Barracuda

Sphyraena qenie

Sighting evidence at Blue Hole, Guam, Mariana Islands (Guam & Saipan)

Photo: nmi_fishguy · CC BY-NC

Blackfin barracuda form cylindrical schools of several hundred fish that rotate slowly just outside the Blue Hole arch at around 25 to 30 m, using the current deflection caused by the chimney opening to aggregate prey. Their chrome sides catch the beam of light that pours through the arch, creating one of the most photogenic encounters in Micronesian diving.

Evidence at this site

1 record within 25 km

Confidence: low

Last confirmed May 2026

Seasonality

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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.

Blackfin Barracuda

Evidence at this site

Seasonality

Also seen at other sites