May Day may have helped promote the creation of a national holiday, but Labor Day is associated with a different significance. âMay Day has always been linked to the demand for less work and more pay; Labor Day celebrates the âdignityâ of work,â Cutler said in the interview.
Trout Life Cycle. Trout can live for about seven years. Most trout are born, grow up, lay eggs and die in lakes or streams. Some trout, though, become very large migratory fish and travel more in their seven years than some people do in a lifetime. In this way, they are similar to their salmon relatives.
The eggs hatch in the gravel, and at first the sac-fry , 3/4 to 1 (20-25mm) long can move very little. absorb nutrients from the attached yolk sac. After several weeks, they wiggle through the gravel and emerge into the stream. After the fry absorb the yolk sac, they begin feeding on plankton. As the fish grow, they develop parr marks on their sides. At this stage, the fish are called parr. Rainbow trout lose their parr marks as they mature. Predation is severe during a trout's early life. Kingfishers, herons, and other fishes take the greatest toll. Usually, fewer than one percent of the newly hatched fry survive their first year.