Uncle Jim’s Worm Farm Super Red European Night Crawler Reptile & Fish Food consists of Uncle Jim’s super red worms—the “big brother” of the red worm. This variety of worm grows 4-5 inches long and are very active. Not only do they make excellent fish bait and food for your reptiles, but they also make great composting worms and are often added to lawn and garden soils because they specialize in aerating and fertilizing soil. The tunnels they burrow allow water and other nutrients to reach the root systems of your lawn and gardens, promoting excellent root growth and strength.