When a particular color pattern allows animals like fishes to blend with their surroundings?

Question

a. cryptic coloration
b. warning coloration
c. defensive color
d. countershading
e. structural color

Answer 1

Open-ocean fish, such as dolphin, tuna and shark, use counter-shading. This means the fish is dark on top (so when looking down on it, the fish blends with the dark waters) and light on bottom (so when looking up from beneath it, the fish blends in with the lighted waters near the surface.) This adaptation helps them to elude predators.

Answer 2

both A and D. You can see that normally fish are pale in the underside and darker in the dorsal side. This is so when predators see them from below the paleness will blend in with the sunlight coming from above, and when a predator looks at them from above they'll blend in with the dark sea bottom.
Some other fish have color patterns all along the body that allow them to blend with their habitat. For example the sea horse looks a lot like marine plants and is even shaped like them. http://www.scubado.co.uk/Wallpaper/Images/640x480/Sea_horse.jpg
http://www.govisitcostarica.co.cr/images/uploads/detail/optimized/sea-horse.jpg

Answer 3

I would think A is correct. Cryptic means difficult to decipher, which would be the case in a fish which was difficult to differentiate from its surroundings.

Answer 4

d