Is the neon green tetra GloFish soon to be the florescent, transgenic terror of America’s waterways? The internet hype machine has repeated ad infinitum the Washington Post’s recent story about the invasive potential of a new breed of GloFish. First sold to the public in 2003, the original GloFish were four brightly colored strains of zebrafish that fluoresced thanks to jellyfish and coral genes.
Last February, the biotech company Yorktown expanded their species range by introducing a transgenic, acid green version of the tetra fish. It’s this Electric Green Tetra (©) that has biologists and wetland conservationists worried. While tropical zebrafish go belly-up in cooler US waters, their argument goes, tetras are better adapted to seasonally cold conditions. Any released GloFish tetras could potentially take over lakes and rivers, their freaky genes compelling them to outcompete native species or breed with their wild cousins.
It’s a catchy argument. It’s also untrue.