英语时差：泰国斗鱼（上）

Siamese fighting fish are as beautiful and as brilliantly colorful as any other tropical fish, but this isn’t the reason they were first domesticated by us humans. As their name implies, Siamese fighting fish can be rather pugnacious. Males will engage other males in violent and turbulent clashes that can involve severe fin nipping, or worse. We humans originally domesticated these fish not for their looks, but to stage contests between them. Apparently, we like to see a good fight. Surprisingly, these fish also seem to enjoy watching a good fish fight, as scientists have discovered. When two Siamese fighting fish attack each other in a laboratory aquarium, researchers noticed that the other males in the vicinity will stop to watch the fight very closely. Is this rubbernecking just idle curiosity? Apparently not.