The presence of contaminants in aqueous effluents is one of the most relevant public health and environmental problems.Among the chemical pollutants of interest are organic dyes that adversely affect human health and aquatic ecosystems.Given this scenario, it is necessary to develop environmental remediation systems that allow the removal of these substances.In this sense, a promising strategy is the use of hydrogels based on biomolecules, where collagen emerges as an interesting alternative because it can be obtained through the valorization of residual biomass from fish production, which allows advance in the generation of Sustainable Food Systems (SFS) and the profitability of productive activities in Limited Resources Aquaculture (LRA).With this objective, the LRA system of the Asociación Agropecuaria y Ecológica de Productores del Medio Sinú (AEPROMSI) in San Pelayo -Córdoba was used as a case study, from which samples of red tilapia scales were obtained; of these, the collagen extraction was carried out through the hydrothermal method with a yield of 25.3 %.This collagen was crosslinked with 4,4′-methylenebis(cyclohexyl isocyanate), obtaining a biomaterial that absorbed 18 times its mass in water and 97.0 ± 0.1% of the Rhodamine B dye.These results show that the potential valorization of residues from fish farming activities through the generation of phases that retain organic pollutants is a promising alternative to advance in the development of SFS in LRA-type productions.