Researchers have also discovered that there are differences between individual paradise fish, which they divide into aggressive hawks and more docile doves. Chiu Kuo-hsun is investigating what relationships there may be between paradise fishes 'agonistic behavior and their biological structure.
研究人員也發現，蓋斑鬥魚之間也有個別差異，並將之分成愛鬥的鷹派與較溫和的鴿派兩組，邱國勛的研究就在探究蓋斑鬥魚的敵對行為與生理結構有何關係。