The Beautiful Colors of the Glofish can't be beat
Caring for GloFish®
Are GloFish® fluorescent zebrafish freshwater fish or saltwater fish?
Like any other zebrafish, GloFish® fluorescent zebrafish are freshwater fish. They should not be placed in a saltwater environment.
Where can I find detailed information about GloFish® fluorescent fish?
In general, guidelines for maintaining a happy and healthy GloFish® fluorescent fish can be found on our GloFish® Care page. Another great general resource for detailed care information about zebrafish is on the Internet. Remember, our fish are cared for in the exact same way as non-fluorescent zebrafish, so this resource will directly apply to our fish.
Who can I talk with regarding specific questions about my GloFish® fluorescent fish?
If you have specific questions about your particular fish that are not answered in either of the websites noted above (including concerns about odd behavior or possible illness), our best suggestion would be to contact either your local fish store or a local veterinarian who works with fish, since both are great resources for fish-specific questions.
Is my GloFish® fluorescent fish pregnant?
Aside from their color, fluorescent zebrafish are the same as other zebrafish in every way. This includes everything from general care and temperature preferences to growth rate and life expectancy. Accordingly, all females will carry unfertilized eggs upon reaching maturity, resulting in a "pregnant" look.
How can I distinguish between males and females?
Males are longer and more slender around the stomach, while females have a rounded, whitish looking stomach, and carry unfertilized eggs upon reaching maturity. This will often result in a "pregnant" look.
What types of fish are GloFish® compatible with?
Like non-fluorescent zebrafish, our fish are community fish and will "play well" with other fish. However, not all fish are this way, so we generally advise that people check with their local retailer for specific information on whether their existing fish can peacefully co-exist with fluorescent zebrafish.
What should I do if my fish is acting funny?
Like any other animals, fish are individuals with their own unique “personalities”. While their actions may sometimes seem strange to us, there is a relatively wide variety of behaviors that zebrafish can normally display. However, if you have any doubts as to whether your fish’s behavior is normal, we would recommend contacting either your local fish store or a local veterinarian who works with fish. Both are fantastic resources for fish-specific questions or concerns.
The Science of GloFish®
Where do GloFish® fluorescent zebrafish come from?
GloFish® fluorescent zebrafish were originally bred to help detect environmental pollutants. By adding a natural fluorescence gene to the fish, scientists hoped to one day quickly and easily determine when a waterway is contaminated. The first step in developing a pollution-detecting fish was to create fish that would be fluorescent all the time. Scientists soon realized the public's interest in sharing the benefits of this research, a process which lead to GloFish® fluorescent fish.
How common is the use of fluorescent zebrafish in science?
For over a decade, fluorescent zebrafish have been relied upon by scientists worldwide to better understand important questions in genetics, molecular biology, and vertebrate development. Fluorescent zebrafish have been particularly helpful in understanding cellular disease and development, as well as cancer and gene therapy.
Where does the fluorescent color come from?
The fluorescent color in our fish is produced by a fluorescent protein gene, which creates the beautiful fluorescence that can be seen when looking at the fish. The fluorescent protein genes occur naturally, and are derived from marine organisms.
Do you have to add a fluorescence gene to every fish before it hatches?
No. Today's GloFish® fluorescent fish are bred from the offspring of fluorescent zebrafish that were originally developed several years ago. Each new GloFish® fluorescent fish inherits its unique color directly from its parents, maintains the color throughout its life, and passes the color along to its offspring.
How exactly do GloFish® fluorescent zebrafish help in the fight against pollution?
To achieve their goal of helping to fight water pollution, scientists are hoping to one day develop a ‘switch’ that will cause always-fluorescing zebrafish 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. 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. The National University of Singapore.
What are the differences between fluorescent zebrafish and other zebrafish?
Aside from their brilliant color, fluorescent zebrafish are the same as other zebrafish. This includes everything from general care and temperature preferences to growth rate and life expectancy.
Does the fluorescence harm the fish?
No. The fish are as healthy as other zebrafish 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.
We are now Offering Galactic Purple Cosmic Blue Starfire Red Electric Green Sunburst OrangeNEWElectric Green Tetra's 
