标题和文章段落来自俩以下网站 http://www.californiasciencecenter.org/ http://www.seaworld.org/aquademics/tetra/all_about_fish.htm "Fish Tails Tell Tales"
"The shape of the tail can be an indicator of how fast a fish usually swims.
Crescent-shaped:Fish with crescent-shaped tails are fast swimmers and constantly on the move. Forked: Fish with forked tails are also fast swimmers, though they may not swim fast all of the time. The deeper the fork, the faster the fish can swim. Rounded: Fish with a rounded or flattened tail are generally slow moving, but are capable of short, accurate bursts of speed." References:
http://www.californiasciencecenter.org/ http://www.seaworld.org/aquademics/tetra/all_about_fish.htm |
