 In 1765 he penned "Flora Monspeliaca", and became "titulaire" at the Montpellier Academy.During this time period he attained a position at the botanical garden, and was in charge of collection and classification of plant species.In 1770 he published an important ichthyological treatise called "Historia Piscicum", a work that expanded the number of fish genera that existed in the Linnaean system.