Tropical Fish for Freshwater Aquariums: GloFish(R), Danio rerio
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GloFish®, Cosmic Blue® Danio
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GloFish®, Cosmic Blue® Danio (Danio rerio)

Quick Stats

Care Level Easy
Temperament Peaceful
Color Form Blue
Diet Omnivore
Water Conditions 64-75° F, KH 8-12, pH 6.5-7.5
Max. Size 2½"
Origin Captive-Bred
Family Cyprinidae
Minimum Tank Size 10 gallons
Compatibility View Chart
What do these Quick Stats mean? Click here for more information

Overview

What do you get when you cross one of the easiest-to-care-for freshwater fish with the brightest new breakthroughs in the aquarium hobby? The perfect starter fish for your desktop, kid's room, or specialty setup!

Fluorescent GloFish® are the first designer-bred Danios (Zebra Fish) to come in five neon colors: Starfire Red®, Electric Green®, Sunburst Orange®, Cosmic Blue®, and Galactic Purple®. GloFish® are not dyed and their color, which is inherited from their parents, does not fade!

Original generations of GloFish® were genetically enhanced as embryos to help detect environmental pollutants and advance scientific research. Now every generation of GloFish® is born with its amazing color! The brilliant hues are produced by a fluorescent protein gene which occurs naturally in some marine organisms.

Keeping GloFish® is as easy as keeping Danios. For best care, keep this peaceful fish by themselves in small aquariums or in small schools with equally non-aggressive fish. Since they are omnivores, feed GloFish® a varied diet of flake and frozen foods.

Approximate Purchase Size: 1" to 1 - 1/4"

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Customer Testimonials

Tabby S Bloomington , IL
I have a children's tank for my 3 & 5 year olds. The glow danios are perfect for their playroom. Dark rocks and a black light bring out the bright colors the best. The only thing I have noticed is that the largest seems to be very aggressive with the 2 smaller fish. They are very easy to maintain and I enjoy sitting in the playroom at night and watching them myself.
Marty J New York , NY
GloFish are sooooo cool they're color is like a bright colored fruit. my GloFish are so bright at night that my dog thinks of the as an intruder becuase they are brighter than him.
Matthew S Evanston , IL
I have all of the glow fish and love them! I keep them in my fluvial chi. They are a great pet and shine whenever I turn off the lights. This is a great fish for kids and adults!
1-3 of 3 testimonials

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