Dusky Grouper

Epinephelus marginatus

Sighting evidence at Meganisi Island, Lefkada

Photo: Falk Viczian Solarboot-Projekte gGmbH · CC BY-NC

Dusky grouper are the dominant apex predators around Meganisi Island, with large individuals occupying territorial boulder overhangs throughout the dive sites. These long-lived fish can exceed 1.5 metres and 60 kilograms, making close encounters here genuinely impressive. As protogynous hermaphrodites, dominant individuals transition from female to male over time, a trait that makes adult males particularly valuable for population health.

Evidence at this site

9 records within 25 km

Confidence: medium

Last confirmed Sep 2025

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.

Dusky Grouper

Evidence at this site

Seasonality

Also seen at other sites