fish

小金鱼摆动着尾巴，在鱼缸里自由自在地生活。鱼儿的尾巴是透明的，扇形的，上面有一条条细小的黑线条。鱼尾巴的作用就像舵，掌握小金鱼游水的方向。小金鱼的身上长着鱼鳍。背上的鳍就像一把半圆形的黑梳子，和尾巴一齐摆动。它们全身长着鳞片，乌黑的鳞片在阳光的照耀下闪闪发亮。鳞片和腹部呈一色，所以很难看清。小金鱼的头很像三角形。它的头一歪，游水的方向就变了。小金鱼的嘴扁平，一张一合，还能吐泡泡呢！小金鱼还长着一双又大又圆的眼睛。黑色的眼珠和身子一个颜色，简直难以分清。
The little goldfish swayed its tail and lived freely in the aquarium. The tail of the fish is transparent and fan-shaped, with thin black lines on it. The role of the fish tail is like a rudder, which controls the swimming direction of the little goldfish. Small goldfish have fins on their bodies. The fins on the back are like a semicircular black comb, swinging with the tail. They have scales all over their bodies, and the dark scales glitter in the sunlight. The scales are the same color as the abdomen, so it is difficult to see. The head of the little goldfish looks like a triangle. When its head tilts, its swimming direction changes. The little goldfish's mouth is flat, open and close, and it can spit bubbles! Little goldfish also has a pair of big round eyes. Black eyes and body are the same color, it is difficult to distinguish.