Offshore Reef & Game Fishing

What Offshore Fishing Covers

Offshore fishing in Australia spans two overlapping worlds: bottom fishing over reef, gravel and rubble for species such as snapper, pearl perch, coral trout and mixed reef fish, and trolling or casting the blue water for pelagics like tuna, mahi mahi, Spanish mackerel and billfish. From Sydney and most east coast ports, the continental shelf sits close enough that a single day can include both, provided the forecast and the boat are up to it.

Australian Fish Species treats offshore work as a planning exercise first and a fishing exercise second. Fuel, forecast, crew briefing and a float plan matter more than the tackle in the rack.

Reading Offshore Structure

Fish hold where current meets structure. Learn to read your sounder for the transition edges rather than the middle of a broad reef.

• Hard-to-soft edges: where reef drops into sand or gravel often concentrates snapper, morwong and flathead.
• Pinnacles and bommies: isolated lumps rising 3–10 m off the bottom hold kingfish, samsonfish and coral trout.
• Current lines and colour changes: the visible seam between clean blue water and greener inshore water gathers baitfish and pelagics.
• Depth bands: note the depth where you get bites, then look for the same band elsewhere in the region.

Timing: Tide, Moon and Weather

Offshore bite windows are less tide-dominated than estuaries, but current still rules. Aim for the period around a tide change when the drift slows enough to hold a bait near the bottom, and fish dawn and dusk hard for pelagics. Around the new and full moon, stronger currents can switch reef fish on but also make anchoring and drifting harder. A settled two to three day weather pattern after a blow often produces the best reef sessions, once the water clears.

Rigs, Baits and Lures

1. Paternoster rig: two dropper loops above a snapper sinker, 40–60 lb leader, suicide or circle hooks. The default for mixed reef fish in 30–80 m.
2. Running sinker / drift baiting: lightly weighted pilchard, squid or slimy mackerel fillet drifted down a berley trail for snapper in shallower reef.
3. Micro jigs and slow-pitch jigs: 60–200 g, worked with a slow lift and long drop; deadly on snapper, pearl perch and coral trout.
4. Trolling spread: skirted lures and swimming minnows at 6–8 knots for mackerel and tuna; scale to 8–9 knots with larger lures when targeting billfish.
5. Live bait: slimies, yakkas and yellowtail slow-trolled or bridled under a balloon for the biggest pelagics.

Match hook size to bait, not to the fish you hope for, and keep leader as light as the structure allows. For species-specific detail, see the snapper guide and the tuna guide.

Tackle Selection

A 15–24 kg spin or overhead outfit with 30–50 lb braid covers most bottom bouncing and light game trolling. Add a 6–10 kg spin stick for casting metals at surface tuna, and a dedicated jigging outfit if you fish deep pinnacles regularly. Carry spare leader spools, a quality gaff or a large knotless net, and a de-hooking tool. Sharp hooks and fresh line beat expensive gear every time.

Safety Offshore

Offshore fishing carries real risk. Check the marine forecast the night before and again on the morning, and note the swell period as well as the height — a 2 m swell at 12 seconds behaves very differently to 2 m at 6 seconds. Bar crossings should be attempted only on a rising tide with local knowledge and every crew member in a lifejacket. Log on with your local marine rescue service, carry an EPIRB and a marine radio, and set a hard turnaround time.

Handling, Barotrauma and Release

Fish brought up from depth often suffer barotrauma: distended stomach, bulging eyes and an inability to swim down. Use a release weight or venting tool as appropriate for the species and depth, minimise air exposure, keep the fish wet and support its body when handling. Decide before you drop the anchor which fish you intend to keep, so undersized or unwanted fish go back quickly rather than sitting in a bucket.

Rules and Limits

Bag limits, size limits, spatial closures, marine park zoning and seasonal closures for offshore species differ by state and territory and change over time. Some pelagics also carry possession and boat limits. Always confirm the current rules with the relevant state or territory fisheries authority, and check marine park zoning maps before you fish an unfamiliar mark.

Get in Touch

Questions about a region, species or rig covered here? Contact Australian Fish Species on +61295585271 or at [email protected] during Mon–Fri: 09:00 – 17:00 (AEST).