As a part of the Feed the Future Innovation Lab for Fish, a team of researchers from WorldFish, the University of Ibadan, and Mississippi State University conducted a fish epidemiological and health economic survey on catfish and tilapia farms, using the online epidemiology and health economics tool developed jointly by WorldFish and the Norwegian Veterinary Institute. The survey is one component of the project on improving biosecurity in aquaculture in Ogun and Delta States, Nigeria.