Pacific Shortfin Eel
The Pacific Shortfin Eel is a tropical freshwater eel found in coastal Queensland, from the Gulf of Carpentaria south to Fraser Island.
It lives most of its life in rivers, billabongs, and floodplain creeks before making a one-way migration to the Pacific to spawn.
Targeted by recreational anglers and valued by Indigenous communities, it's a distinctive catch in far north Queensland's lowland waterways.
Scientific Name: Anguilla obscura
Also known as Pacific Short-Finned Eel, Pacific Shortfinned Eel, South Pacific Eel
- Uniform dark olive-brown to near-black above, fading to pale silver or yellowish below — no distinct markings or patterning.
- Snake-like, tubular body with small pectoral fins; dorsal fin begins just ahead of or level with the anal fin — shorter than the similar Longfin Eel's dorsal.
- Jaws extend to or beyond the rear edge of the eye; eyes sit high on the head in larger adults.
- Most fish run 40–60 cm; the species can reach 120 cm, though fish over 80 cm are uncommon in recreational catches.
What to know
Habitat Distribution
- Native to coastal drainages of Queensland — from the Watson River northeast of Aurukun on the Gulf of Carpentaria south to Fraser Island.
- Favours the lower reaches of rivers, coastal lagoons, billabongs, floodplain creeks, and slow-moving swamps rather than fast upland streams.
- Catadromous: juveniles enter estuaries as transparent glass eels, grow to adults in freshwater, then migrate to the open Pacific to spawn once — adults do not return.
- Tolerates a range of lowland tropical habitats including muddy-bottomed billabongs and seasonally flooded wetlands common across Cape York and the Gulf country.
Key Locations
- Cape York Peninsula river systems — Watson River and other Gulf of Carpentaria drainages represent the northern limit of the Australian range.
- Coastal lowland streams and billabongs between Cairns and Fraser Island, particularly in floodplain country where slow water and abundant cover suit the species.
- Estuarine reaches of Queensland's tropical rivers during wet-season run-off, when juvenile eels move upstream and adults stage for their ocean migration.
Specific Spots
- Undercut banks, submerged logs, and mud burrows — eels rest in tight cover during daylight and are rarely in open water before dark.
- Deep holes at creek bends and the downstream edges of lagoon outlets, where slow current concentrates food and provides depth for shelter.
- Weed edges and root tangles in billabongs give eels both ambush cover and access to the shallows where insects and small crustaceans concentrate at night.
- Tidal reaches and estuarine pools near river mouths hold juvenile eels (elvers) moving upstream — worth targeting in the wet season run-off period.
Pacific Shortfin Eel FAQ
Answers from onWater's species guide.
What are the best lures and bait for Pacific Shortfin Eel?
Fresh or salted worms, whole prawns, and cut fish (mullet, bream frames) are the most reliable baits, fished hard on the bottom after dark near structure.
When is the best time to fish for Pacific Shortfin Eel?
Wet season (November–April) brings rising water levels that push eels into newly flooded billabongs and floodplain creeks, making them more accessible and widely distributed.
How do you catch Pacific Shortfin Eel?
Most anglers fish for Pacific Shortfin Eels from the bank at night, dropping bait hard on the bottom near logs, undercut banks, or weed edges in billabongs and slow river pools. Patience matters, eels take bait slowly and will back into cover if they feel resistance too early.
What do Pacific Shortfin Eel eat?
Primarily small fish, crustaceans (prawns, yabbies), molluscs, and insects, nearly all hunting happens after dark, so bait fished on the bottom at night consistently outperforms daytime efforts.
Where do Pacific Shortfin Eel live?
Native to coastal drainages of Queensland, from the Watson River northeast of Aurukun on the Gulf of Carpentaria south to Fraser Island. Favours the lower reaches of rivers, coastal lagoons, billabongs, floodplain creeks, and slow-moving swamps rather than fast upland streams.
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