Fish: Re: [tropical fish club] Re: Fish colors affected by light amounts

That is really cool. Its neat to know you can see color changes even with adult fish. I have seen with betta's on that group that many of them change colors.

Donna

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>From: Ray <sevenspringss@wmconnect.com>
> Re: Fish colors affected by light amounts
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>Hi Renate,
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>Yes, certain color morphs of Angelfish can only be developed tp display their genetic make up when reared in specific durations of light. Joanne Norton had written of both Half-Blacks and Leopard Angels as needing only certain periods of light per day, or they would develop as appearing to be Silver Angels even though they had the genetic make up of these other varieties. There may be other Angelfish strains she mentioned which require only a certain amount of light, but as it's been a while since I last read the late Dr. Joanne Norton, I don't quite recall at this time.
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>Dawn brings out other influences of color on fishes, the color of the light bulbs and food -- especially natural food. This is where fish put out in the pond for the Summer not only will grow to a large size fast, but will color up very brightly from the nutrients they get from insects, etc. The vitamin D she mentions is a great benefit for the fish in helping develop color, not only coming from the foods but from natural sunlight. Fish can be induced to greatly intensify their natural colors just by feeding them certain foods containing Beta Carotene. These would include shrimp, krill, lobster, crab and many other foods containing this nutrient -- and is why, in the past on these groups, I've recommended including frozen Mysis Shrimp in their diets whenever possible.
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>Ray
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