I can post scores of "cichlid" photos where a
black background was utilized, and every color in the rainbow popped on those fish.
BTW - this discussion was about
background color, not substrate colors.
A light substrate, with the correct lighting, can be used very effectively with a black background to acheive the same results as a lighter colored background. This whole "flowerhorn can't be kept in a black background" nonsense, is just that, nonsense.
I posted the following in one of the stickies in this section. (comments in quotes were posted by another member)
1. BACKGROUND: It CAN NOT be black! This is rule number 1. Even if you have a $1000 fish, if you have black background, they will turn gray,black,head goes down,redness will be washed away and etc...... No, they will not adjust over time. FHs love colorful environment. If you can't stand other color backgrounds other than black, well FHs aren't for you.
Talk about painting with a broad brush. Just like all groups of fish, some FH will darken to blend with their environment, but that in no way equates to stating that you cannot have a black background, and keep nice looking non-stressed FH that exhibit amazing color & pattern.
You later state:
Some people might get away with black background with bright colored gravel,decorations, and bright lighting. So if your background is permanently black, you "might"(different for every FHs) get away with colorful environment.
So why not just say that in the first place?
I don't mean to nit-pick, but info like this only confuses those new to the hobby, that don't understand the principles behind background and/or substrate colors, and how it can affect certain fish. Stating that one can't keep a FH in a tank with black background makes about as much sense as saying that you can't keep a CA cichlid in a black background, or they will turn gray, black, head goes down, redness will be washed away etc.
You might want to peruse the CA cichlid media lounge to see how ridiculous that statement is.
Does it get darker when there is a darker background because its trying to blend in or something
Sometimes. What happens is that the darker background/substrate can sometimes trigger a morphological change within the chromatophore cells of the fish. You can read more about this in the following link.
http://www.wetwebmedia.com/aqscisubw...coloration.htm
I personally keep a Thai Silk, King Kamfa, and a Red Diamond, all in tanks with black background, with black substrate (more like very light gray under the lighting I use) and it in no way has imparted a negative color impact on my fish. Much of this will fall under personal preference, and what the FH owner finds will bring out what they personally feel is the best in their fish.
Just another opinion I thought that I would toss out for those that are considering background and/or substrate color.
HTH