These worms are great fishing worms, the red worm for trout, perch, bluegills, pickeral, bass and all sorts of panfish, The euro nightcrawler is a liitle larger and a better fishing worm. They both can be used for composting and castings as well. raise these worms and help clean up the enviroment, clean landfills, reduce your rubbish bill, get free fertilizer, sell the over product and still have plenty for fishing. they are real easy to raise. You can also feed them to the birds, reptiles, turtles, snakes etc..