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Biwaa S'Trout: the segmented swimbait that fishes on the drop

September 27, 2026·7 min read
Biwaa S'Trout in a photorealistic rainbow trout finish, eight-segment body, pink lateral band, soft forked grey tail, gold 3D eye, photographed without trebles fitted
The S'Trout in rainbow trout livery; in this shot both belly hangers are still bare.
BrandBiwaa
ModelS'Trout Swimbaits
TypeSinking segmented swimbait
Target speciesPike, Bass
Size14 / 16.5 / 19 cm (5.5 / 6.5 / 7.5 in)
Weight28, 51 and 85 g (1, 1.8 and 3 oz) depending on size
Running depththe whole column, roughly 25 cm (10 in) of fall per second
Retrieve speedvery slow, the bait already works as it sinks
Actiontight fluid swim from the segments, soft tail kick, rocking oscillation on a free fall with no input
Recommended rigready to fish on its factory trebles, 30-40/100 braid and 60/100 fluorocarbon or wire leader for pike
Go-to colorsRainbow Trout in clear water over trout forage, roach finishes in mixed water, dark tones in coloured water

Before tying this one on, it helps to know if the spot actually calls for it. CarnaFish reads the scene from a photo.

Most jointed swimbaits are sold on a promise about the retrieve: you wind, the body undulates, it looks good. The Biwaa S'Trout is one of the few that also works while you do nothing at all. It's listed as sinking, with a fall rate of about ten inches per second, and all the way down the segments keep moving. That changes how you fish it completely — and it asks for patience.

Segments joined by woven mesh, not moulded plastic

The most interesting technical point on the S'Trout is the joint. Instead of plastic hinges or metal links, the segments are connected by a mesh-woven fabric, flexible but tough, rated at a forty-pound breaking strength — around eighteen kilos.

What that does in the water is obvious. The joint has no hard point. A swimbait on rigid hinges folds in steps, with a maximum angle set by the mechanics; a fabric link folds progressively, giving a continuous wave down the whole body. That's what produces a tight, fluid swim, far closer to a real fish than a chain of segments clacking against each other.

It's also, on this kind of bait, the usual wear point. Fabric joints get cut on pike teeth long before the body gives up. Rinse the bait in fresh water and check the joints after every good fish: a joint starting to fray is a joint that will fail at the worst possible moment.

Three sizes, with weights that demand serious tackle

The manufacturer lists three versions, all sinking and all quoted at the same fall rate:

The quoted sink rate, about ten inches — twenty-five centimetres — per second, is the same across all three sizes. That's a valuable and rarely published figure: it lets you count the fall precisely. Six seconds, a metre and a half; twelve seconds, three metres. No depth control is more reliable than a countdown on a bait whose maker publishes its sink rate.

How to fish it: slowly, then slower

The slow roll along an edge

The baseline retrieve is a very slow straight roll, just fast enough to feel the body working through the rod. The S'Trout doesn't need speed; it actually loses credibility if you burn it. Along a reed edge or a gravel-pit drop, a walking-pace pass two metres under the surface is often all it takes.

Stop and go with a countdown

This is where the fall earns its keep. Cast, count the seconds needed to reach the depth you want, wind three or four turns, then stop everything for two or three seconds. During the stop the bait drops back rocking and the segments keep living. A pike that's been following from ten metres back almost always commits on that dead time.

Don't set the hook on first contact with a big swimbait. Followers often slap the tail without having it in their mouth. Keep winding at the same pace for one more second: if the fish really took it, the weight arrives and you set; if not, you haven't torn the bait off its nose and it will come back on the next pass.

An imitation bait, and what that means on our water

The S'Trout is drawn as a trout, with photo-print technology and a multilayer paint process that reproduce the pink lateral band and the speckling on the back. It's a convincing imitation, but it still has to make sense on your spot.

On a reservoir fed by a trout stream, or on stocked water, the resemblance pays directly. On a canal or a gravel pit with no trout in it, what works is the silhouette, the volume and the swim, not the accuracy of the pattern. In that second case, plainer roach or silver-white finishes often produce the same results for less money.

The classic mistake

Fishing the S'Trout like a search bait, firing out fast casts to cover ground. A swimbait in this class isn't there to find fish, it's there to make up the mind of a fish you already know about. Locate first, with a faster lure or on the sonar, then bring the S'Trout out on the spot you've identified. Fifteen well-placed casts beat two hundred random ones.

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The factory hardware

The bait comes rigged with black-nickel Zion trebles and stainless steel hardware. That's consistent with the rest: discreet black hooks, metal that won't rust in brackish water, and rings sized for the load. There's nothing you have to change as a matter of course, which is welcome at this price. Just check, as on any big swimbait, that the trebles aren't twisted after a fish — a bent treble throws the swim off immediately.

Colors by water clarity

Tying on a bait this size only makes sense if you know where the fish are, and that's exactly what CarnaFish helps you work out: one photo of the water and the AI suggests the zone, the depth and the lure family that fit the conditions. To compare this jointed bait against a one-piece soft swimbait like the Megabass Magdraft or a pike-shaped jointed bait like the Savage Gear 3D Hybrid Pike, those sheets lay out different trade-offs, and our guide to choosing a pike lure puts the whole thing in perspective.

The short version

FAQ

Does the S'Trout sink or float?

It sinks. The manufacturer lists all three sizes as sinking, with a fall rate of about ten inches — twenty-five centimetres — per second. That fall, during which the segments keep moving, is what draws a good share of the strikes.

Which size should I pick for pike?

The 16.5 cm at 51 g is the best compromise on most European water. The 19 cm at 85 g only earns its place if you're genuinely targeting big fish and you own a proper swimbait rod.

What rod do I need to cast it?

From 51 g upward you want a casting rod rated to at least 80 g, in 1.95 to 2.20 m. With the 85 g model you're into dedicated swimbait tackle, rated 150 g and above.

Do I need a wire leader?

Yes, as soon as pike might be around. Sixty to eighty-hundredths fluorocarbon is enough on a pure bass spot, but on a bait pike often take sideways, a wire or titanium leader is the only real guarantee.

How long does a segmented swimbait like this last?

It depends entirely on the joints. The body and the paint last a long time; it's the fabric at the articulations that wears, especially on pike teeth. A check after every good fish and a fresh-water rinse extend the life noticeably.

Can you catch bass on it?

Yes, especially in 14 cm, on waters that hold big fish. It's selective fishing: you'll get far fewer bites than with a standard paddle tail, but the average size will be clearly higher.

The full pike lure guideSeason-by-season strategy: which family of lure, when, and why.

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