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Teraglin


Teraglin

Teraglin are an offshore schooling species found along a narrow strip of eastern Australia, from southern Queensland down to around Sydney's Port Hacking and Montague Island in NSW.

They're a night-fishing target for reef anglers who know their marks — a species that rewards preparation and local knowledge over casual effort. The flesh is excellent, which keeps dedicated trag hunters coming back.

Scientific Name: Atractoscion aequidens

Also known as Trag, Trag-jew, Teraglin-jew, Jew, Geelbeck Croaker


Physical Characteristics:
  • Silvery body with a brownish to blue or purple back, fading paler on the belly — often with faint oblique lines along the sides.
  • Distinctive yellow inside the mouth and under the gill cover; a black blotch at the base of the pectoral fin.
  • Concave (crescent-shaped) tail in adults — the clearest visual difference from the similar-looking Mulloway, which has a more rounded tail.
  • Typical reef fish run 1–4 kg; larger specimens are taken at night over productive reef marks.

What to know

Habitat Distribution

  • Endemic to eastern Australia — found from southern Queensland (around Double Island Point) south to Montague Island, NSW. This is a narrow range for an offshore species.
  • Adults school over hard reef ground offshore, typically in 20–90 m of water where peaks and gutters concentrate baitfish. Rarely found over sand or gravel bottom.
  • Juveniles use deeper estuaries and inshore waters; adults move fully offshore and don't show up in estuaries or from the beach.
  • The Eastern Australian Current is thought to distribute larvae along this coast, which is why the species is treated as a single biological stock across both states.

Key Locations

  • Offshore reefs between Double Island Point (southern QLD) and Noosa — the northern end of the range where trag are a secondary target in the Rocky Reef Fishery.
  • Offshore reefs off the NSW central and northern coast — productive marks exist along this stretch for anglers who know the bottom structure.
  • Broken Bay and Port Hacking, Sydney — the southern extent of reliable catches; local reef marks here have produced fish for generations of Sydney-based bottom fishers.
  • Montague Island, NSW — the southernmost extent of the documented range, with offshore reef structure holding fish seasonally.

Specific Spots

  • High reef peaks and deep gutters are the key features — trag school tight to hard structure during daylight, then spread out to feed after dark.
  • Sunken wrecks hold fish too; any hard structure that breaks the current and concentrates baitfish or squid is worth a drift or an anchor set.
  • At night, fish move up off the bottom and can be found at mid-water — don't assume they're always pinned to the reef after dark.
  • During the day, fish show on the sounder in tight schools close to the reef; daytime catches are rare and usually accidental, most often around full and new moon periods.

Teraglin FAQ

Answers from onWater's species guide.

What are the best lures and bait for Teraglin?

Whole pilchards and squid strips are the most consistent baits, fresh or well-thawed, presented on a size 4/0–6/0 hook to match the bait. Live or dead slimy mackerel, yakkas (yellowtail scad), and other small baitfish work well when trag are chasing bait actively at night.

When is the best time to fish for Teraglin?

Warmer months (spring through autumn, roughly September to April) see the most consistent offshore activity and better numbers of fish on the reef marks. Winter fishing is possible but schools can be harder to locate and bite windows shorter; the fish don't disappear but effort-to-catch rates drop.

How do you catch Teraglin?

Trag fishing is almost entirely a boat-based, offshore night fishery. Anglers anchor up on known hard reef marks before sunset, then fish bait, pilchards, squid, or live baitfish, on the bottom or at mid-water once darkness falls.

What do Teraglin eat?

Small baitfish and squid make up the bulk of the diet. After dark, trag chase these actively off the bottom and into mid-water, which is why whole pilchards, squid strips, and live or dead baitfish are the go-to offerings.

Where do Teraglin live?

Endemic to eastern Australia, found from southern Queensland (around Double Island Point) south to Montague Island, NSW. This is a narrow range for an offshore species. Adults school over hard reef ground offshore, typically in 20–90 m of water where peaks and gutters concentrate baitfish.

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