1. Salmon spawn in rivers.
鲑鱼会在河流中产卵。
2. Fish reproduce by spawning.
鱼类通过产卵繁殖。
3. Spawning season is a critical period for fish reproduction.
产卵季节是鱼类繁殖的关键时期。
4. Some fish can lay millions of eggs at once.
一些鱼类一次可以产下数百万颗卵。
5. After spawning, parents usually do not care for the fry.
产卵后,父母通常不会照顾幼鱼。