Research has shown that in many animals, the winners of a fight are more likely to win subsequent contests, while the losers tend to lose their following fights. In experiments where male stickleback fish were randomly introduced to another fish, 65% of the winning fish won the second match, while all losing fish lost the second contest. Research has shown that in many animals, the winners of a fight are more likely to win subsequent contests, while the losers tend to lose their following fights. In experiments where male stickleback fish were randomly introduced to another fish, 65% of the winning fish won the second match, while all losing fish lost the second contest. Social Sciences Phys.org – latest science and technology news stories