Blue Stiliger
Ercolania coerulea
The Blue Stiliger (Ercolania coerulea) is a vibrant blue sea slug prized by anglers for its striking coloration and spirited surface runs. Though technically a mollusk, it is pursued like a game fish in tropical reef systems because of its elusive nature and aggressive bite when hooked.
Basic Information
Family
Esocidae
Max Size
12 cm (4.7 inches) length, up to 45 g (0.1 lbs) weight
Habitat
Shallow coral reefs and seagrass beds, 2-20 m depth in tropical Indo‑Pacific waters
Best Season
June‑September (warm summer months)
Best Time
Early dawn and late dusk
Distribution
No distribution map available
Fishing Tips for Blue Stiliger
- Use a light 4‑6 lb fluorocarbon leader to reduce line visibility
- Cast near patch reefs where bright algae attract their prey
- Retrieve with a steady twitch‑pop motion to mimic small crustaceans
- Keep the hook sharp and set quickly as they strike aggressively
Top Fishing Locations for Blue Stiliger
Christmas Island - South Pacific Coast
AustraliaRich coral reefs with abundant blue stiliger populations, making it a top destination for enthusiasts.
Best: December-February
Great Barrier Reef - Lizard Island
AustraliaPristine reefs teeming with marine life, offering consistent encounters with blue stiliger.
Best: June-September
Milne Bay - Papua New Guinea
Papua New GuineaDiverse reef systems where blue stiliger are common during the transition season.
Best: April-May
Nusa Penida - Bali
IndonesiaRocky outcrops and seagrass beds attract blue stiliger, though sightings are less frequent than in Australia.
Best: March-May
Kona Coast - Hawaii
United StatesVolcanic reefs host occasional blue stiliger; anglers need experience to locate them.
Best: July-August
Wolf Island - Galápagos
EcuadorRemote island with unique currents; blue stiliger are present but require expert knowledge to find.
Best: January-March
Market Prices
Recommended Fishing Equipment for Blue Stiliger
Recommended Equipment
Best bait: Live mysid shrimp or tiny krill