GloFish require neutralized water that is free from chemicals such as chlorine and ammonia. They subsist on flaked food and live food, such as brine shrimp. These fish should not be overfed, as any uneaten food will pollute the tank. The best water temperature for GloFish ranges between 72 and 80 degrees Fahrenheit. Each month, approximately 25 to 50 percent of the GloFish's water should be changed.
GloFish require adequate lighting during the day and darkness at night. They benefit from the use of an aquarium filter to remove toxins from the water. GloFish should be kept in groups, as they are schooling fish. They should be kept in a proper tank, rather than a bowl, and should not be overcrowded. Tanks should be kept away from direct sunlight and heating lamps to avoid harmful algae growth.
GloFish are a patented and trademarked brand of genetically modified fluorescent fish. They are available from the Yorktown Technologies company in a range of colors, including red, green, orange, blue, purple and pink. GloFish were first bred to help detect environmental pollutants. It was soon realized that the general public had an interest in the fish as pets, so the company capitalized on the technology in late 2003. GloFish are bred from the original line of genetically modified fish. They are born with their vibrant color and maintain it for their entire lives. These fish are not injected with dyes.