What’s the Difference Between Fluorocarbon Fishing Line and Mono?

Fluorocarbon and mono fishing lines have some similarities, but there are some important differences between them that should be noted before deciding which one to use for your fishing trip. While both types of lines are made from synthetic materials, the composition and properties of the two lines vary significantly.

Composition: Fluorocarbon is made up of fluoropolymers, while monofilament is made from nylon. Fluorocarbon is denser than mono, meaning it sinks faster when in water.

This can be an advantage when fishing for bottom-dwelling species as it allows you to get your bait down to where the fish are quickly. Mono is lighter than fluorocarbon, so it floats more on the surface which can be better for certain types of lures or baits.

Visibility: When submerged in water, fluorocarbon is almost invisible due to its low refractive index which helps it blend into its environment more easily. Mono is much more visible in water thanks to its higher refractive index. This can be an advantage when using certain types of lures or baits as they become more visible to fish.

Strength: Fluorocarbon has a higher tensile strength than mono, meaning it can withstand more force before breaking or stretching. This makes it ideal for catching larger fish that require a greater amount of pressure to reel in. Mono has a lower tensile strength which makes it better suited for smaller fish or lighter tackle.

Flexibility: Fluorocarbon is stiffer than mono and does not stretch nearly as much as mono does when subjected to a load or pressure. This lack of stretch helps make fluorocarbon more sensitive than mono because there’s less give in the line so you can detect even the slightest bites more easily.


Fluorocarbon and monofilament fishing lines have their own advantages and disadvantages depending on what type of fishing conditions you’re faced with. Knowing the differences between these two types of line will help you choose the best line for your next fishing adventure.

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Lindsay Collins