题目选项分析

In contrast to some fish, whose eggs require months to incubate, the Rio Grande silvery minnow produces eggs that hatch in about 24 hours, yielding larvae that can swim in just three to four days.

In contrast to the requirement of months of incubation for some fish eggs, the Rio Grande silvery minnow produces eggs that hatch in about 24 hours, yielding larvae that can swim in just three to four days.