The current invention involves a universal fishing bait fundamentally comprised of a matrix of fibrous collagen made up into any shape or design capable of attracting fish, that is 100% biodegradable and innocuous, that has physico-chemical properties that confer it with the capacity to accommodate liberate and diffuse attractant substances, and whose physico-mechanical properties confer it a soft and flexible texture, as well as making it resistant to breakage. Likewise, the invention outlines a procedure to prepare such a bait, and a precursor paste employed in the preparation, as well as the use of fibrous collagen in the preparation of said universal fishing bait.