To bring out the best colors of a fish, you must keep the fish healthy, and happy.
A healthy fish requires excellent water quality and excellent food.
To keep the water quality high, you must have the tank well established with nitrogen cycle, regular partial water change is also required.
To have a good diet, you need to feed the fish with several different high quality fish food to have a balanced diet.
A happy fish requires comparability tank mate(s), as well as a good overall tank environment including necessary hiding places to retreat to when threatened, enough numbers in a school if it is a school fish.
what's the colors of a barrel eyed fish
there are many colour fish have
To enhance fish colors, A high quality stamp food is needed. Omega One, New Life Spectrum, and Hikari are the best brands. Supplement food such as bloodworm, krill, brine shrimp, are well known for color enhancement for fish. Both freeze dried and frozen versions can work. For brine shrimp, newly hatched baby brine shrimps are the most nutritious, it requires a hatch kit to hatch your own brine shrimp from eggs which can be bought from varies pet stores online.
all the colors
It depends on what type of fish change colors, like for example a black moor fish can change color by its temperature.
a lot of colors
Various staining colors, such as mahogany, walnut, cherry, and oak, can be used to enhance the appearance of wood furniture.
Oscar fish change colors when they are stressed. They dig because they are curious.
Oscar fish come in various colors such as red, orange, albino, and tiger patterned.
In the books it is colorful and full of about 15 different colors but in reality these fish have about 6 different colors which is probably why they call it the Rainbow Fish.
600,000,000,000,000,000,000
blue