Species · GBIF taxon 2403157
Spotted Garden Eel
Heteroconger hassiAlso known as Hass's Garden Eel, Spotted Sand Eel
Spotted garden eels live in vast, crowded colonies on sandy sea floors, where hundreds of individuals sway like blades of grass in the current. Each eel cements its burrow with mucus and rarely leaves it, stretching out to catch drifting zooplankton while keeping its tail safely anchored inside. When predators approach, the entire colony retreats in a synchronized wave, vanishing into the sand in an instant.
MarineBurrowingColonial

Licensed reference(c) Natalie Lemanski, some rights reserved (CC BY-SA) · cc-by-sa
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Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & prey
- Copepods
- Fish larvae
- Zooplankton
Predators
- Snake eels
- Triggerfish
- Stingrays
ThreatsHabitat destruction, aquarium trade collection, and climate change
HabitatsSandy slopes, reef flats, and seagrass beds
Life span5 to 10 years
Size / weightNot available
Classification
- FamilyCongridae
- SpeciesHeteroconger hassi
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Safe to observe at a normal distance.
Responsible observation
- Approach slowly: Move with gentle, steady motions to avoid triggering their retreat reflex.
- Maintain distance: Stay at least three meters away to see them fully emerge from the sand.
- Observe the current: Watch how they face into the water flow to catch drifting food.
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