“We’re working with a molecule called Biokos,” explains Neil Goldsmith, the startup’s CEO and co-founder. “It’s a natural molecule, found by researchers in Scotland who noticed that a saprolegnia infection was spreading across salmon eggs – except for one patch. They discovered a Pseudomonas microbe was growing there and killing the fungus nearby.” Since then, the compound has been tested against a range of fish parasites. While it’s not being used for controlling saprolegnia – due to the discovery of even more effective natural molecules by Sundew – Goldsmith believes that its potential applications have grown significantly. Compared to formalin – a chemical long used in aquaculture that is both hazardous to humans and risky for fish – Biokos offers a gentler, more sustainable alternative.