04-24-2012, 10:00 AM
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Originally Posted by fishybert
hmm, i kinda thought having light colored gravel/sand would help contrast the little ones, since they're a bit dark-colored.
The reality is the opposite. Fish that come from habitats with dark substrates, which covers most of the fish we keep, will be more colourful over dark substrates and of course with less overhead light from floating plants. I have seen examples of this in many characins and even corydoras, that changed their background colouration (light/darker) depending upon the substrate. A fish over a bright substrate will naturally feel threatened because it is un-natural, and that means less colourful and more stressed.