In Mrs. Whitson 2nd grade class they trout have now become frys and are at least an inch long or maybe less.  They have already absorbed their yolk sac and are now eat the fish food.Right now if they water in the tank is too hot then the trout inside will die.  Now they trout are learning to swim with their fins that they have grown while they were eating the yolk sac. They have 180 trout in the tank 150 are swimming 30 are hiding and they 2 bubble riders.  Which are the fish that swim on the bubbles.  Almost all of the trout have swam up so also they are out of the redd which means that they have left their nest.