The Costa Rican woodgrain turtle is a typical omnivorous turtle, and its larvae are biased towards insects, such as mealworms, crickets, earthworms, etc.

The adults are omnivorous, and they can also be fed with vegetables and figs. Fruits such as apples and bananas, or add a small amount of animal food such as fish and shrimp. You can also feed synthetic fish feed or turtle feed, and add calcium and vitamins appropriately. After each feeding, use a net bag to salvage food residues to keep the water clean.