That is part of nature's camouflage to protect the fish. The fish coloration, as you descibe it, makes it more difficult for a predator (fish or man) to see the fish from above (dark against the dark background of the water and sea or lake bottom) and from beneath (light against the light background of the sunlit atmosphere). This camouflage scheme has evolved over the centuries; those fish that were not so protected did not survive as well as those that were, and did not produce new generations as efficiently.
The advantage is that if the predator of the fish sees it by the top, it cannot see it since the water is camouflaging it. Same looking by the bottom, because the rays of the sun hits the waters surface and makes it light.
In general, within a body of water, the background is lighter if you look up (towards the sun, or at least the sky) than if you look down (towards the mud at the bottom). So fish which are colored dark on the top and light on the bottom blend in better with the background than they would if the colors were reversed. Being harder to see helps them escape predators and/or sneak up on prey.
Most fish are darker on the top and lighter on the bottom. It's a camouflage thing.
Think of it like this..... If a predator is looking down from the sky, the dark top of the frog will blend well with the ground and dark waters. And if a predator under the water looks up to the surface, the bottom of the frog would blend well with the sky. So frogs have light bottoms and dark tops so they can blend well in their surroundings and be safe from most predators! :)
It really depends on the breed of shark, some prefer the deep depts and others prefer the more shallower waters
It eats bottom-dwelling organisms (the most popular of which are mussels, sponges, small fish, snails and snail eggs, algae, worms, shrimp, crustaceans and crabs).
Most fish can be fed fish food. If not they feed on algi, a bacteria that grows on the seabed and plants or the glass walls and bottom of a fish tank.
Angel fish have been known to go into a stage of shock where they lay down on the bottom of a tank and look dead. Provided the water parameters are good for Angelfish (Pterophyllum sp.), if the fish is left to its own devices it will recover and settle down. If however something is wrong with the water parameters the fish will most likely die.
Dark colours absorb the most light.
yes. offhand, most of the fish at the bottom of the ocean do not require sunlight.
I think you mean "Fantail" and the answer is goldfish can see no better or worse in the dark than most other fish. They are normal in their light requirements.
Most fish get very light colored when stressed, but some become very dark. Basically, a drastic color change indicates a problem.
No. In actual fact, since there is insufficient light for colour to be seen in the very deep ocean trenches, most deep water fish are lacking in colours.
People, trees, flagpoles, most animals (although the Japanese have bred "glow in the dark" fish and cats) , planets, moons, and other items that only REFLECT light.
depends what type of fish it is most of the time when a fish is on the bottom it means its sick or depressed but your fish is probably healthy
Think of it like this..... If a predator is looking down from the sky, the dark top of the frog will blend well with the ground and dark waters. And if a predator under the water looks up to the surface, the bottom of the frog would blend well with the sky. So frogs have light bottoms and dark tops so they can blend well in their surroundings and be safe from most predators! :)
This is one of nature's most common camouflage methods for creatures that live in, or spend a lot of time in, the water. When viewed from below, they blend into the (lighter) sky. When viewed from above, they blend into the (darker) bottom of the pond or lake. Most fish also have this color arrangement.
Yes most likely but it depends what your light blue and dark pink look like.
Most fish prefer to live in a well-lit tank. Lighting enhances the colours, and also allows live plants to grow, and fish prefer living in an environment with live plants. Fish constantly kept in the dark will probably be stressed and their eyesight may be affected.
light colours.I mean- light yellow,light rose,light cream etc......