Cawthron Institute has developed a web tool called ‘BeNeZe’ that helps fish farmers manage flatworm infections in Kingfish and Amberjacks (Seriola species). The free tool is available through the BeNeZe website ( and is mobile compatible.

BeNeZe works on the basis that temperature influences how quickly the number of flukes can build. Parasite populations don’t build as quickly in cooler waters, so it’s important that treatment regimes factor in local sea surface temperature (SST). Using the BeNeZe tool, farmers select the parasites on their farm and enter the current SST.

BeNeZe works by crunching life-cycle data for each parasite and sets a timed treatment regime which breaks the parasites’ life cycle.

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