WFish disease and parasitesWAmmonia poisoningWCryptocaryonWDisease in ornamental fishWDiseases and parasites in salmonWDropsy (fish disease)WFish medicineWFishkeepingWHead and lateral line erosionWIchthyophthirius multifiliisWList of diseases and parasites in codWPredatory dinoflagellateWSaprolegniaWSwim bladder diseaseWTrypanosomaWUlcerative dermal necrosisWVelvet (fish disease)WXenoma