You don't have to agree, but you don't have to get mad over it, either.Jackson;4775958; said:Not all species respond the same way.
As you said a happy fish will also show stronger colours. I am not saying only substrates affect colour.
I too have a few hypostomus that I keep in tank with light colored substrate. It took them a long time to colour up. They are now what I would consider normal colour. But to say that the substrate won't affect any pleco is wrong. That's what I will not agree with.

