The zebrafish is important in studying develop-mental origins of health and disease. Their embryos are transparent and develop outside the body, allowing simple study of the developing embryo. Zebrafish research provides a unique visual approach to under-standing the developmental defects in adult diseases and age-related abnormalities, such as cardiovascular diseases. Fish are the third most commonly used protected species in research after mice and rats: other types of fish are widely used in safety tests for environmental protection. [2018 all fish: 514,340 ]
See www.AnimalResearch.info on fish and zebrafish. RSPCA has issued guidance on the housing and care of zebrafishand Fish for Science is an excellent university website for anything on research using zebrafish.