My aquarium has several colorful cichlids that look stunning when they swim.

cichlids 是 cichlid 的复数形式，指"慈鲷科鱼类"，这是一类色彩鲜艳的热带淡水鱼，常见于家庭水族箱中。词源来自希腊语"kikhlē"，意为"斑点鱼"，因其体表常有斑点而得名。