Author Gwendolyn Hooks (http://www.gwendolynhooks.com/) who has some watery life cycle books coming out soon, gave me the heads up about some wonderful trout-related programs. See more here:
Trout in the Classroom in Martinsville, VA
Trout in the Classroom main page
I can see these activities pairing well with
Trout Are Made of Trees
Trout, Trout, Trout: a Fish Chant
Ant, Ant, Ant: an Insect Chant.
Oh, why not throw in Honk, Honk, Goose because there are probably geese dabbling around in that stream, too!