Demand   of   food   sources   from   sea   and   continental  waters  has  drastically  increased  in  recent  years.  Almost  all-worldwide  fisheries are at their highest capacity. Any  increment  in  water  origin food has to be produced through aquaculture, which has grown   in   recent   years   (about  10%  annual).   Furthermore,  aquaculture  has  a  very  important  role  in  conservation   of  endangered  species.  However,  among many other technical  difficulties,  illness  prevention  and/or  control  are  very   important. Mexico and especially in the Northwest of the country, aquacultural development requires to focus on animal health, but there is not any specialized institution on this matter.