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 How do they do that?

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Fish Egg
Fish Egg

Female Number of posts : 13
Location : NH - USA
Job/hobbies : Family, Sailing, Hiking, Theraphy Dogs, Chihuahua Rescue, DSA
Humor : Yes
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Registration date : 2011-04-02

PostSubject: How do they do that?   Fri Jun 08, 2012 10:59 pm

I really dislike sucking up the fry when vacuuming. So I used white gravel when I moved the very dark fry to their 40 gallon tank.
Opps... I now have almost white fry! I didn't realize they can change their color that much.
I really like the dark color, so when they were merrily munching on sweet potato, I dropped dark gravel around them. They darkened up a bit. Amazing to watch!

So how do they manage the color change?

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Aussie guy
Juvenile Bristlenose
Juvenile Bristlenose

Male Number of posts : 113
Age : 37
Location : Perth, Western Australia
Job/hobbies : Fish, Rockclimbing, Animals of every kidney
Humor : I'd tell a joke, but I can't think of one :)
Thank You Points : 5
Registration date : 2011-04-27

PostSubject: Re: How do they do that?   Sun Jun 10, 2012 2:42 pm

Im not sure but I think it has something to do with having the ability to shift the concentration of pigments in their skins, when they need to be darker they move the darker pigments towards the surface of their skins and move the lighter pigments deeper in which helps them blend right in Smile
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How do they do that?
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