which fin helps to fish to remain in a straight line as it moves forward?
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which fin helps to fish to remain in a straight line as it moves forward?
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Answer:
➡ caudal fin..
Fish stretch or expand their muscles on one side of their body, while relaxing the muscles on the other side. This motion moves them forward through the water. Fish use their back fin, called the caudal fin, to help push them through the water. The fish's other fins help it steer....