ichthyotoxinEtymologyFrom ichthyo- + toxin.nounAny chemical compound that is toxic to fish.“This dinoflagellate, apparently widely distributed in temperate coastal waters, produces ichthyotoxins that have killed net-pen farmed salmonids in Norway, Scotland, and Ireland (Smayda 2006).”Any toxin produced by fish.“More recently, Ehrhardt (1971) drew attention to ichthyotoxins as a whole. Among fish alone there are more than 500 species that are dangerous to man.”