15.02.2022 |

GM Glofish are thriving in the wild in Brazil

Escape underlines yet again the inadequacy of GMO regulations around the world. Report: Claire Robinson and Jonathan Matthews

Fish genetically engineered to glow in the dark have escaped from fish farms in Brazil and are multiplying in creeks in the Atlantic forest, a new study shows. The GM fluorescent fish are designed for aquariums and are trademarked and marketed as Glofish.

Biologists worry that the GM fish could threaten the local fauna in one of the most biodiverse spots on the planet. "This is serious," ecologist Jean Vitule at the Federal University of Paraná, Curitiba, told Science magazine. Vitule says the ecological impacts are unpredictable. He worries that fluorescence genes could be introduced into native fish with detrimental effects, perhaps making them more visible to predators. "It’s like a shot in the dark," he says.

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