Production of colorful fishes for the aquarium trade is a rapidly growing sector of the aquaculture industry. In recent years, India is making rapid strides in marine ornamental fish trade through hatchery culture practices. Fish health management is a term used in aquaculture to describe management practices which are designed to prevent fish disease. In marine fish hatcheries, the indiscriminate use of antibiotics in prophylactic treatment has led to the development of the resistant strains and the need to switch over to other antibiotics. Mangroves have been a source for several bioactive...