✔ 最佳答案
The ball spreads the fish to assume the deep dust color or the green, on the body has several to compare the deep color the spot or several cross grains. The ball spreads the fish to have the big eye which a pair bulges out, long in top of the head; They have two piece of dorsal fins, can the ship's sail resemble likely fluctuation. Most importantly, the ball spreads fish's pectoral fin muscle to be solid, strong powerful, moreover the pectoral fin continually in the same place, and bends it to be possible forward the pectoral fin when the walking stick same use, enables them to bounce on the silt mud flat surface freely. If it bends the body to one side, then unbends suddenly, the movement may be quicker. Using these methods, the ball spreads the fish to be able “to jump” more than half meter above distance. The ball spreads fish's ventral fin to merge in together, forms a sucker, therefore it may the social climbing in mangrove's stem department and the prop root and so on in the vertical plane. In the water, these fin function on is same with other fish's fin, may hover normally. The ball spreads fish's eye to be possible to rotate, makes its field of vision scope to expand and each direction; It also has the special pleat level, enables the eye to be possible when the land shrinks into among them performs to lubricate; This point is very important, because the ball spreads the fish not to have the tear gland, cannot protect the cornea to exempt is damaged