Float Fishing for Luderick in Australian Harbours

Luderick, also widely known as blackfish, are one of Australia’s most enjoyable harbour species to target. They are accessible from rock walls, marina edges, breakwalls, wharves and other relatively sheltered shore-based locations. Yet, their subtle bites and strong fights provide a genuine test of an angler’s skill.

The traditional method is beautifully simple: suspend a small bait of green weed or cabbage beneath a sensitive float, introduce a steady trail of weed-based berley and allow the bait to drift naturally through the feeding zone.

Find the Right Harbour Water

Harbour luderick commonly hold around structure where weed grows or collects. Productive areas include:

• Rock walls and breakwalls

• Marina edges and pylons

• Harbour corners affected by tidal flow

• Submerged ledges

• Weed-covered rocks

• Drop-offs close to the shoreline

Deep water is not always necessary. Luderick often feed surprisingly close to the wall, particularly where there is a narrow ledge or a change in depth. Before casting any distance, run the float along the edge directly below your feet.

Watch the current carefully. A gentle tidal drift is ideal because it carries the berley and bait naturally along the structure. Strong surges are still fishable, but you need to manage the line without dragging the float out of position.

Use Local Weed as Bait

Green weed and sea cabbage are the traditional luderick baits. Cabbage generally grows around coastal rocks and the lower, saltier sections of rivers and harbours, while finer green or river weed is more common farther upstream.

A useful rule is to begin with the type of weed naturally growing near the water you are fishing. Luderick are grazing fish, so matching the local food source can make the bait appear more familiar. Cabbage and green weed are among their most commonly used natural baits, although luderick may also take worms, nippers, prawns and bread in some situations.

When collecting weed, take only what you need and check whether collection is permitted in that area. Aquatic reserves, marine parks and other protected locations may have special rules.

To bait the hook, select a fresh strand or small leaf and wrap it neatly around the hook shank. Leave a short tail extending beyond the bend so the bait moves naturally. The hook point should remain clear enough to penetrate when you strike.

Avoid presenting a large, untidy clump. A slim bait usually drifts more naturally and gives timid fish less resistance.

Berley Little and Often

Berley is one of the most important parts of harbour luderick fishing.

A simple mixture can be made by combining finely chopped weed or cabbage with damp sand. The sand adds weight and helps carry small pieces of weed down through the water column rather than allowing everything to float away on the surface.

Introduce a few small handfuls before fishing, then continue adding modest amounts throughout the session. The goal is to create a fine, consistent feeding trail—not to fill the fish.

A small but steady stream of weed-based berley can attract luderick and encourage the school to remain within casting range.

Pay attention to where the berley travels. Your bait should pass through the same line and at approximately the same depth. Throwing berley in one direction while drifting the float somewhere else wastes much of its effect.

A Simple Harbour Float Rig

A practical harbour outfit consists of:

• A long, soft-action rod

• A centrepin, sidecast or spinning reel

• Light main line

• A sensitive luderick float

• Small split shot or sinkers

• A light leader

• A small hook

• A long-handled landing net

Traditional luderick rods are long and forgiving. A rod of roughly 10 to 12 feet gives good line control around walls and pylons while absorbing the sudden lunges of a hooked fish. A light surf rod or suitably soft float rod can also work.

A centrepin reel provides excellent control over the drift, but it is not essential. A small spinning reel is perfectly suitable for anglers learning the technique.

The basic rig is a float on the main line followed by enough weight to suspend the float correctly. Just the stem should be visible without any of the bulb showing above the waterline. Then a small swivel, leader and hook. Small blackfish-style hooks like the ReproBaits Tackle hooks are ideal..

Weight the Float Correctly

Float balance is critical.

A properly weighted float should sit low in the water with only the upper stem clearly visible. When too much of the float body remains above the surface a luderick must pull against extra buoyancy. This can cause a cautious fish to reject the bait before the angler has time to strike.

Add or remove small split shot until the float settles with minimal resistance. Spread the weight appropriately so the bait sinks naturally without tangling.

The float should remain visible but it should not resemble a cork sitting high above the surface. Fine adjustment often makes the difference between seeing vague movements and getting clean, confident downs. You want a neutral bouyancy the best you can so not to tip the luderick off.

Set the Correct Depth

The distance between the float and hook determines where the bait travels.

Begin by estimating the depth and setting the bait close to the bottom or near the weed-covered structure. If the hook continually snags, reduce the depth slightly. If the float completes repeated drifts without interest, increase or decrease the depth in small increments.

The correct setting can change as the tide rises or falls. Regular depth adjustments are therefore part of the technique rather than a sign that the original rig was wrong.

A productive harbour wall may feature a shallow shelf that suddenly drops into deeper water. Luderick often patrol this edge. Adjust the float so the bait travels close to the ledge without constantly catching on it.

Drifting weed or cabbage beneath a float remains one of the most established and successful ways to target luderick.

Control the Drift Without Dragging the Bait

After a short cast or gentle flick, keep enough line off the water to remain connected to the float. However, avoid pulling against it.

The bait should travel at approximately the same speed as the surrounding current. If the line becomes tight and drags the float sideways, the bait may lift unnaturally or move faster than the berley.

Feed line when necessary, then recover the slack as the float approaches the end of the drift. A long rod makes this easier, particularly when fishing parallel to a rock wall.

Several short, controlled drifts through the strike zone are generally more effective than casting well beyond the berley trail.

Read the Bite Before Striking

Luderick bites can range from a decisive disappearance to a series of tiny lifts, dips and sideways movements.

A float that bobs slightly may indicate that a fish is testing or mouthing the bait. Resist the urge to strike every small movement. Allow the fish time to take the bait and pull the float down with purpose.

When the float sinks cleanly and remains below the surface, wind out any slack and lift the rod firmly but smoothly. A violent strike is unnecessary when using fine hooks and light leaders.

Missed bites are normal. If the bait comes back shortened or crushed, replace it neatly and repeat the same drift. Several tentative bites can quickly turn into a confident down once the berley has the school feeding properly.

Play the Fish Patiently

Luderick fight hard for their size and will use nearby rocks, pylons and ledges to their advantage.

Let the soft rod absorb the fish’s initial runs. Maintain steady pressure and guide it away from sharp structure, but do not attempt to lift it directly from the water on light tackle.

A long-handled landing net is essential when fishing from harbour walls, breakwalls or elevated platforms. Allow the fish to tire near the surface, then lead it head-first over the net.

Luderick generally respond well to careful catch and release. Research cited in Australia’s national stock assessment recorded very high short-term survival among hook-and-line-released fish.

Keep only what you need for a feed and check the current size, possession and local fishing rules for your state before fishing.

Watch for Unexpected Species

A weed bait drifted around harbour structure can attract more than luderick. Other herbivorous or omnivorous fish may take the bait, and some harbour species have sharp or venomous spines.

Use long-nosed pliers when handling an unfamiliar catch, keep hands away from raised dorsal spines and identify the fish before attempting to hold it. When uncertain, leave the fish in the net, remove the hook carefully and release it with minimal handling.

The Key to Consistent Harbour Luderick

Successful float fishing comes down to a handful of details working together:

Fresh bait, a fine berley trail, accurate depth, a correctly weighted float and a natural drift.

No single part of the system needs to be complicated. The challenge—and much of the enjoyment—comes from watching the float, interpreting each movement and making small adjustments as the tide changes.

Once the float settles into the berley trail and slides beneath the surface, the quiet concentration of harbour fishing is replaced by a surprisingly powerful fish attempting to reach the nearest rock or pylon. That combination of subtle bites, visual fishing and strong runs is exactly why generations of Australian anglers continue to chase luderick beneath a float.