The GloFish™ Danio is a trademarked brand of fluorescent zebrafish that was genetically modified with the purpose to detect environmental pollution. Scientists were able to inject a fluorescent protein gene (from marine organisms) into the zebra danio embryos to create the glofish. There are no dyes or color injections into this fish. Successive offspring get the gene passed down to them from parents. They are still working on developing a fish to only fluoresce when in the presence of pollution and a portion of glofish sales goes to the advancement of this research. Although not originally developed for the ornamental fish trade, it is one of the first genetically modified animals to become publicly available. It is sold only in the United States, where it remains the only genetically modified animal to be publicly available. The rights to GloFish are owned by Yorktown Technologies, the company that commercialized the fish.
Scientific Name: Danio rerio
Common Name: GloFish™- Starfire Red®, Electric Green®, Sunburst Orange®, Cosmic Blue®, Galactic Purple®, Red Danio, Green Danio, Orange Danio, Blue Danio, Purple Danio
Size: The maximum size of GloFish™ Danio in an aquarium is usually less than 2" long.
Origin: Although not originally developed for the ornamental fish trade, it is one of the first genetically modified animals to become publicly available. It is sold only in the United States, where it remains the only genetically modified animal to be publicly available. The rights to GloFish are owned by Yorktown Technologies, the company that commercialized the fish.
Diet: Flaked food and live food such as brine shrimp are good options, once or twice a day. This species feeds on insects that have fallen into the water, aquatic insect larvae, and other small animals. Don’t overfeed your GloFish™. Uneaten food will pollute their aquarium and can make them sick.
Temperament: GloFish™ are relatively hardy, easy to keep, and get along well with other fish. However, not all fish are this way, so if you have other fish in your tank or are adding new fish to your GloFish tank, be careful to choose fish that can all live together in a similar environment. They are mostly peaceful when kept in groups of 6 or more with occasional fighting and chasing among the group. GloFish™ Danio are moderately active, and the males energetically quarrel with each other but usually do no harm.
Difficulty Rating: Easy
Captive Requirements: It is very important to prepare the water before adding fish to an aquarium. Most tap water contains harmful chemicals (like chlorine and ammonia), which can be dangerous for your fish and should be neutralized. Another helpful preparation step, known as “cycling,” will establish beneficial bacteria in an aquarium and reduce the any chances of your fish having an adverse reaction to their new environment. It is best to house these fish in at least a 20-gallon aquarium, but more is better, because the males quarrel with each other. Keep at most one fish per gallon.
Reef Tank Compatibility: This is a peaceful fish and should be housed with other peaceful fish. They will chase one another, but rarely inflict injury. They should not be kept with slow-moving long-finned fish as they may be nipped or bothered by the fish's active nature. Recommended tank mates include small fish like, Harlequin Rasboras, Neon Tetras, Cardinal Tetras, Guppies, Corydoras Catfish, and Honey Gouramis. They get on well with all other Danio species except the Giant Danio.
Reproduction: Glofish™ breeding is prohibited due to licensing restrictions.
Additional Information: To achieve their goal of helping to fight water pollution, scientists have developed a ‘switch’ that will cause always-fluorescing 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. To help further the research, a portion of the proceeds from sales of all GloFish™ goes directly to the lab where these fish were originally created. Illumination during daylight hours is important to reduce stress and disease, and it will also help you bring out the brightest possible color in your fluorescent fish. The light should not be left on throughout the night, however, as fish benefit from alternating periods of light and darkness, just like people.
Water Requirements: 64-86°F (18–30°C), but prefer temperatures of 72-80°F (22-27°C). Water hardness: 5° to 19° dH. 6.5 - 8 pH balance. About 25-50% of the water in your tank should be changed at least once a month. When changing the water, be sure to neutralize the chemicals that are present in the tap water, and bring the water to the same temperature as the water in your tank before adding it. This is very important to remember since a quick temperature change can be fatal for the fish. We strongly recommend using a filter. Because an aquarium is a living biological system, it will produce various toxins that should be removed from the water. A filter helps remove these toxins and also houses the majority of the beneficial bacteria, which are vital to maintaining healthy, happy fish.
Life Span: 2 - 4 years, sometimes up to 5 years
Determining Sex: Often it is difficult to distinguish male from female when juveniles but as adults, females should develop a more pronounced stomach when carrying eggs.
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- About 3 Weeks
- 1.00 Ounces
- 1.00 (in)
- 2.00 (in)
- 1.00 (in)
- Calculated at Checkout