Since Yorktown Technologies first sold its genetically modified pet — the GloFish — in 2003, the fluorescent fish, ... Under a black light, it glows in the dark.

Back in 2003, biotech company Yorktown Technologies developed a genetically modified fluorescent fish that was neon-bright and glowed in the dark under black light. Since that time, the company ...

BLACKSBURG, Va., March 26, 2025 /PRNewswire/ -- Leading pet product supplier Spectrum Brands, Inc., is thrilled to announce the latest addition to its growing family of GloFish ® fluorescent fish ...

GloFish. By Lauren Johnston. December 3, 2003 / 6:20 PM EST / CBS A certain little fish is ... Scientists say they first "saw the light" in Singapore.

The GloFish for sale in American pet stores, distributed by Yorktown Technologies of Austin, ... (They shine most intensely under black light.) As regulations now stand, ...

Despite growing concern over the potential risks of releasing such animals into the environment, the transgenic GloFish looks set to go on sale on 5 January without any federal regulatory approval.

The GloFish The original GloFish was a genetically engineered zebrafish, a member of the minnow family, with a gene from a jellyfish that allows it to glow under natural and ultraviolet light.

Only under black light does the GloFish glow. “Looking at the photos vs. what I’ve seen in fish stores, it doesn’t look like the photographs,” Snell said.

GloFish are a product of Yorktown Technologies LLP of Austin, Texas. The company’s chief executive, Alan Blake, said scientific studies have shown the fish are safe and the lawsuit is without merit.

Future of GloFish in California Looks a Little Bit Brighter. By ... a small tropical fish that has been genetically manipulated so that it seems to glow red in daylight or ultraviolet light. ...

GloFish absorb light and then re-emit it, giving them their distinctive glow. Blue LEDs, black lights, and actinic lights are the best lights to bring out their vibrant colors. 2.