Electronic Journal of Differential Equations, Vol. 2023 (2023), No. 17, pp. 1-10. Title: Enrichment paradox and applications Authors: Zaichun Feng (Univ. of Missouri, Columbia, MO, USA) Y. Charles Li (Univ. of Missouri, Columbia, MO, USA) Abstract: We introduce a general predator-prey model for analyzing the paradox of enrichment. We hope the results obtained guide us on identifying a real field paradox of enrichment. Submitted April 1, 2022. Published February 20, 2023. Math Subject Classifications: 92D25, 37N25. Key Words: Paradox of enrichment; predator-prey model; Kolmogorov model; Holling model.