The fascinating GloFish has been genetically altered to give off a bright neon glow. The genes of this Zebra Danio have been altered with the genes of a certain anemone that features the illuminescence, and that is how the GloFish came about!
The Starfire Red GloFish was the first color releaed. They are hot pink with slightly lighter stripes. The top of the head may be lighter or slightly orangish in color.
The GloFish is just as hardy as a regular Zebra Danio and also features the same bluish striping. They are an active fish that will hang out around mid-water or upper water level. They are great for community tanks. Feed them a varied diet of flake, small pellet, and occasional small-sized frozen food.
The glowing coloration of the GloFish will not fade or change - it is within their genetic structure and will actually be passed on to their offspring should they spawn. To see them "glow" at their best, keep under blue "actinic" lighting. The colors will be bright under white lighting but will not "glow" as brightly.
These are beautiful little fish and very enjoyable to watch. However I don't think they are very hardy fish. I bought 5 to start a school in an already established aquarium, I have now had 2 fish die due to a fungus. No other fish in this aquarium have been ill and none have ever exhibited any signs of illness prior to this addition. I've done a lot of research on the GloFish line and have not found much by way of illnesses that they are prone too. Could just be that these fish are not as healthy as they should be.
Starfire Red GloFish 2/7/2013
This fish's arrival size is 1 inch in length. A really sweet schooling fish and the awesome factor is you can mix and match danios if their the same size. The danios swim back and forth at the top of the aquarium.