Hygrophila corymbosa 'Stricta' (Temple Plant) is a fast-growing, robust aquarium stem plant from Thailand, known for its upright stems, large, light-green leaves that can turn reddish under intense light, making it an easy-care, popular background plant for beginners, often used in Dutch-style aquariums or as a half-emersed plant. It thrives in low-tech setups but benefits from nutrients, grows tall (15-40cm+), and propagates easily from cuttings, requiring frequent pruning to stay submerged.