Utilization of the tropical almond tree leaves in aquaculture

Abstract

Tropical almond tree (Terminalia catappa), also known in the Philippines as “talisay” is a large tropical tree in the Combretaceae (leadwood tree) family that grows mainly in tropical areas of Asia. The tree grows from 10 m to 25 m high and has horizontal whorls of branches with shiny and ovate leaves, 10-25 cm long, and tapering below to a narrow and heart-shaped base with expanded rounded apex. “Talisay” fruit is smooth and ellipsoid, 3-6 cm long, and prominently bi-ridged or keeled down to the sides, with fibrous and fleshy pericarp and hard endocarp. Studies have indicated that the leaves of “talisay” are rich in tannins and a host of organic compounds that help in conditioning the culture water resulting in improved survival, growth, and health of cultured aquatic species.