Malachite green is widely used in the aquaculture industry as an antifungal and antiparasitic agent to treat fish and fish eggs, particularly in controlling fungal infections like saprolegniasis and parasitic infections such as white spot disease. It is also employed as a disinfectant for fish tanks and equipment. In the textile industry, it serves as a dye for materials such as silk, leather, and paper, providing a vibrant green color. Additionally, it has been used in biological research as a staining agent for microscopic analysis of tissues and cells. However, its use is restricted or banned in many countries due to potential health and environmental risks.