Probably one of the most easily recognized invertebrates, earthworms are of the phylum Annelida, meaning “ringed” and refers to a series of segments that make up their bodies. Varying from all brown to a pinkish colour and lengths from a few millimeters to 300mm (1ft) in some species but are usually up to 100mm (4in).
There are four very common worm species –
- Night crawlers, as its name suggests they are more often seen at night when they come to the surface when damp conditions prevail.
- Field or garden worms
- Manure worms also known as “Red Wigglers”
- Red worms, basically another type of manure worm, but smaller than Manure worms.
Eisenia fetida (older spelling: foetida), known under various common names such as redworm, brandling worm, panfish worm, trout worm, tiger worm and red wiggler worm, red californian earth worm, is a species of earthworm adapted to decaying organic material. These worms thrive in rotting vegetation, compost, and manure; they are epigean. They are rarely found in soil, instead preferring conditions that are inimical to some other worms. In this trait they resemble the Lumbricus rubellus.
Eisenia fetida worms are used for vermicomposting. They are native to Europe, but have been introduced (both intentionally and unintentionally) to every other continent except Antarctica, occasionally threatening native species. – Wikipedia