markfnq Posted September 18, 2012 Share Posted September 18, 2012 i have often wondered what is it that gives fish the ability to turn their colours on and off ?blood flow ? thanks mark. Link to comment Share on other sites More sharing options...
gillsysyd Posted September 18, 2012 Share Posted September 18, 2012 Opening and closing of the pigment cells Link to comment Share on other sites More sharing options...
Noddy65 Posted September 18, 2012 Share Posted September 18, 2012 Some stack the pigment cells or change their angle....theres lots of ways...its mostly (always?) controlled by nerves under the influence of hormones, food, light etc etc Link to comment Share on other sites More sharing options...
mattrox Posted September 19, 2012 Share Posted September 19, 2012 Chromatphores.http://en.wikipedia.org/wiki/Chromatophore Link to comment Share on other sites More sharing options...
markfnq Posted September 20, 2012 Author Share Posted September 20, 2012 thanks interesting read, some big wierd words in there. cheers mark Link to comment Share on other sites More sharing options...
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