Another easy to culture live food for your aquarium fish.
Grindal worms are a tiny relative of the common earthworm.
Much larger than microworms but only a fourth the size of the harder to keep Whiteworms. Grindals are about half an inch long and as big around as a piece of thread. They make excellent live food for growing fry and conditioning breeder adults of smaller species such as Guppies, Tetras, Danios and Killifish. They are also greedily eaten by even bigger fish. All fish benefit from some live food in their diet.