When fishing, your line is the direct connection between you and the fish.
The choice depends on your technique and the fish species.
Here is an overview of the three most commonly used types:
1. Nylon (Monofilament)
This is the classic, single-strand synthetic thread. It is the most versatile line, ideal for beginners and all-round use.
Characteristics: Stretchable, floats or sinks slowly, often transparent or light-colored.
Advantages: Inexpensive, knots easily, and the stretch absorbs the shocks during a fight (less chance of the hook tearing out).
Disadvantages: Has 'memory' (curls over time), is less sensitive due to the stretch, and wears out faster due to UV light.
2. Braided line
Consists of multiple thin fibers (such as Dyneema) braided together. Popular for predator fishing and sea fishing.
Characteristics: No stretch, extremely strong at a thin diameter, usually does not sink (unless specifically treated). Advantages: Very direct contact with your lure; you feel every bite. You can cast much further with it because the line is thinner.
Disadvantages: More expensive, visible underwater, chafes through faster on sharp obstacles (stones/mussels), and knotting is more difficult.
3. Fluorocarbon
Looks like nylon, but is made of a different material with a higher density. Is often used as a leader (the last section before the hook).
Characteristics: Almost invisible underwater, heavy (sinks quickly), low stretch.
Advantages: The refractive index is almost equal to that of water, so fish do not see the line. It is very abrasion-resistant against teeth or stones.
Disadvantages: Stiffer than nylon, making it less pleasant to cast on a reel. The knot strength is often slightly lower than with nylon.
In summary: which one do you choose?
Beginner/All-round: Choose Nylon.
Predator fishing with lures: Choose Braided line (with a Fluorocarbon leader). Shy fish/Clear water: Use Fluorocarbon as the last meter(s).