My 125 has black sand with a black background. I want to change it but changing out substrate... 100 pounds of it sounds like a nightmare
The color of the background or substrate have nothing to do with the fish's color. It's diet, genetics and the proper water parameters for the species.
The "enhancement" is all visual on the dry side of the glass. Certain colors will be visually more appealing because of color and contrast. I think you are saying the same thing with the shirt example. My point was that the fish won't actually change color because of a background or substrate. That has to be a more direct physical reaction to diet, genetics and water.It
That is false. Okay fish adapt to their surroundings. A fish will blend to a dark background and or substrate because its instinct is to survive. I promise you a huge factor in color is background and substrate. Explain to me if your black and wear a white shirt one day and then a black shirt the other day will the color of the black person change? Obviously not but It will enhance the features it will blend in the skin tone and then pop out the features with a white shirt. I'm not saying the color will be any different but the color will be less enhanced.