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Why does many plecos change their colour to yellow?

Posted: 20 Jan 2013, 14:09
by Lutt
I had an discussion yesterday about why some plecos change his natural colour to yellow. And why just yellow?
Some say it's a because of stress, but i dont think that it's why. Parancistrus aurantiacus is one of the most famous pleco who have this transformation. Also Hypostomus luteus is capable to change colour.

But my question is why they do this? Does anybody really know what happens?

Re: Why does many plecos change their colour to yellow?

Posted: 20 Jan 2013, 16:43
by Birger
Here is a start, you may want to carry on in this thread, keeps the information together.

http://www.planetcatfish.com/forum/view ... =5&t=35868

Birger

Re: Why does many plecos change their colour to yellow?

Posted: 21 Jan 2013, 01:38
by plecoboy
I would guess they turn yellow to blend in with a sandy substrate to avoid predators.