Least Concern· population stable· assessed 2012

Blue Tang

Acanthurus coeruleus

Sighting evidence at La Caleta, Bayahibe

Dense shoals of blue tang perform essential algae-cropping duties across La Caleta's reef patches, preventing macroalgae from smothering coral recruits. Their coordinated grazing sweeps are particularly visible in the morning hours when the school moves systematically across the shallowest sections of the reef.

Evidence at this site

No confirmed records on file at this site

Blue Tang 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.

Blue Tang

Evidence at this site

Also seen at other sites