I heard of them and seen them on animal planet.Are they really that cool?I wonder if any one owns one or two.If you do tell me about them.I want some in the future.Thanks
GloFish
- Thread starter Cocobutter
- Start date
Nothing special about them other than the color. And they really dont look that great unless you devote the tank to them.
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I have had all three colors. They are neat if the tank is solely for them and they do glow under blacklight but is best veiwed under blue lighting. If you get multiple colors too they can mate but must mate with like colors in order for them to spawn the same color. If a orange mates with a green you will get plain zebra danios but if a orange mates with a orange you will get orange. Honestly for the price its not worth the purchase unless its on sale.
There are five, yes. I think the purple and blue are a bit of a stretch.
I really like them because of the SCIENCE!!! aspect.
The first one that came out was the one that expressed Green Fluorescent Protein (GFP), which is normally found in a certain species of jellyfish. The others that have since come out contain variations of that original gene. They were orginally developed to help detect water pollution! The protein has a half-life of about 18 hours. If there is any chemical toxin in the water that affects the health of the fish, their colors will fade because they stop making it (I do not think that heat or pH stress would be enough to cause this to change AS much as toxins). Once they are returned to clean water, they will color back up, since it's coded in their genes, and not injected like those awful dyes that people inject into glass tetras. The change to DNA is a simple insertion for the protein itself, no other changes have been made to the fish. If released, their potential environmental impact is arguably LOWER than that of other danios, because thier bright colors would cause them to be preferentially preyed on.
If you have a family member that you are trying to get more interested in the fish hobby, it'd be worth adding them to a community tank, sure. When they first came out, I had ordered 15 (five each of the three colors green, yellow-orange, red, that were available at the time) for my large community tank. Their care is the same as normally colored danios. They are fun, since they are constantly moving, like danios do. If you get any, I would recommend a set of at least five. They don't seem to mind what color the others are. They are danios, and that's good enough for them.
I really like them because of the SCIENCE!!! aspect.
The first one that came out was the one that expressed Green Fluorescent Protein (GFP), which is normally found in a certain species of jellyfish. The others that have since come out contain variations of that original gene. They were orginally developed to help detect water pollution! The protein has a half-life of about 18 hours. If there is any chemical toxin in the water that affects the health of the fish, their colors will fade because they stop making it (I do not think that heat or pH stress would be enough to cause this to change AS much as toxins). Once they are returned to clean water, they will color back up, since it's coded in their genes, and not injected like those awful dyes that people inject into glass tetras. The change to DNA is a simple insertion for the protein itself, no other changes have been made to the fish. If released, their potential environmental impact is arguably LOWER than that of other danios, because thier bright colors would cause them to be preferentially preyed on.
If you have a family member that you are trying to get more interested in the fish hobby, it'd be worth adding them to a community tank, sure. When they first came out, I had ordered 15 (five each of the three colors green, yellow-orange, red, that were available at the time) for my large community tank. Their care is the same as normally colored danios. They are fun, since they are constantly moving, like danios do. If you get any, I would recommend a set of at least five. They don't seem to mind what color the others are. They are danios, and that's good enough for them.
Great fish for begininers cuz theyre hardy and kids love their colors, one of the cooler lookin easy fish that can go in small tanks
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