[story]
The knife fish is eating a small fish, but some people want to raise the small fish in a fish tank, find some a glass baffle, divide the fish tank into two, the small fish and the knife fish are raised, the knife fish When I arrived at the small fish, I slammed over. Every time I hit the glass partition, I have been long time, I know that I can't hit it. The little fish saw that this is a big master, and it is desperate to hide, but it can't come over every time, it will be slowly adapted. The knife fish and small fish are not close to the glass partition.
One day, a friend came home, saying that the glass plate knife fish will not eat small fish, the owner does not believe, so the two bets.
So quietly removed the glass baffle, the knife fish and the small fish did not respond. They all swim in the original activities. A division of water was formed on both sides of the original glass position.
