Tim's Tropical Fish
GloFish are Zebra Danios that have been genetically altered by introducing the DNA of a sea anemone. GloFish are currently available in red, yellow and green but only in locations permitted by law. Canada and California have prohibited them.
GloFish are identical in behavior to Zebra Danios. Zebra Danios originally come from India. They are an excellent beginning fish for aquarists because of their hardiness and the ease with which they breed. They like to swim in schools and are very active. They eat flake foods.
See below for further information on the best method of displaying GloFish and Frequently Asked Questions about them.
GloFish™ fluorescent fish absorb light and then re-emit it. These never quite match the colors shown on the GloFish.com web site. For best results, they suggest the following:
Daytime Viewing – A traditional white aquarium light (such as a fluorescent or halogen light) is ideal for daytime use. Because GloFish™ fluorescent fish absorb light and re-emit it, the fish's color will appear brighter and more vibrant as the amount of light used is increased. White gravel will further deepen the color since the reflective white color of the gravel will increase the overall amount of light in the tank.
Nighttime Viewing – Although a black light can cause these fish to glow, our experience has shown that the diffusion of light in the water does not create a worthwhile effect. We don't recommend the purchase of a black light.
Fluorescent zebra fish were specially bred to help detect environmental pollutants. By adding a natural fluorescence gene to the fish, scientists will be able to quickly and easily determine when our waterways are contaminated. The first step in developing these pollution detecting fish was to create fish that would be fluorescent all the time. It was only recently that scientists realized the public's interest in sharing the benefits of this research.
For over a decade, fluorescent zebra fish have been relied upon by scientists worldwide to better understand important questions in genetics, molecular biology, and vertebrate development. Fluorescent zebra fish have been particularly helpful in understanding cellular disease and development, as well as cancer and gene therapy.
To achieve their goal, scientists are in the process of adding a "switch" that will cause the always fluorescing zebra fish to selectively fluoresce in the presence of environmental toxins. A non-fluorescing fish will signal that the water is safe, while a fluorescing fish will signal trouble. Although these fish are not currently available, scientists hope to complete this work soon. To help further the research, a portion of the proceeds from sales of all GloFish™ fluorescent fish goes directly to the lab where these fish were created.
Aside from their brilliant color, fluorescent zebra fish are the same as other zebra fish in every way. This includes everything from general care and temperature preferences to growth rate and life expectancy.
Fluorescent fish absorb light and then re-emit it. This creates the perception that they are glowing.
No. The fish are as healthy as other zebra fish in every way. Scientists originally developed them several years ago by adding a natural fluorescence gene to the fish eggs before they hatched. Today's GloFish™ fluorescent fish are bred from the offspring of these original fish.
No. Today's GloFish™ fluorescent fish are bred from the offspring of fluorescent zebra fish that were originally developed several years ago to help fight environmental pollution. Each new GloFish™ fluorescent fish inherits its unique color directly from its parents, maintains the color throughout its life, and also passes the color along to its offspring.
Zebra fish are tropical fish and are unable to survive in non-tropical environments. They have been sold to pet owners worldwide for more than fifty years. Despite all these years of aquarium ownership, zebra fish are only found in tropical environments, such as their native India. However, it is important to remember that GloFish™ fluorescent fish are intended for use as aquarium fish only, and should never be intentionally released into the wild.
For an animal in the wild, eating a fluorescent zebra fish is the same as eating any other zebra fish. Their fluorescence is derived from a gene that is already found in nature and is completely safe for the environment. Just as eating a blue fish would not turn a predator blue, eating a fluorescent fish would not make a predator fluoresce. However, please remember that fluorescent zebra fish are NOT intended for human consumption.
Fluorescent zebra fish, like all ornamental fish, are NOT intended for human consumption; they should never be eaten.