WorldFish Aquatic Animal Health Team and its partners developed extensive training materials for end-users to learn more about fish sampling skills for disease diagnostics. Those materials can be adopted as part of research, routine disease screening or in response to abnormal fish mortality incidents during outbreak investigations. WorldFish needed a way to make this content digitally more easily accessible by end-users for use on aquaculture farms, hatcheries etc. The team rapidly built a microlearning curriculum of seven interlinked courses, optimized for delivery to users' phones. Researchers, students, fish farmers, extension workers and service providers can now access this information on their phone anywhere in the world.