No. C. elegans is a worm (nematode).
Yes, some protists eat bacteria. For example, a Blepharisma, a pink protist that looks a little like a deformed oval.
The color of the compounds the bacteria produce are usually not relevant to their role. Pyocyanin, for example, helps P. aeurginosa acquire iron, inhibit fungal growth, and slow the metabolism in nearby cells by lowering intracellular concentrations of cAMP. It also is a reactive oxygen species, and has been shown to kill C. elegans.
A thermophile likes high temperature, and for bacteria it is 45-100 °C. Some bacteria even resist temperatures close to 121°C.The bacterialike archae Pyrolobus fumarii can grow in water at a maximum temperature of 113 °C and Strain 121 at 121°C, surviving at 130°C.
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=349150
a. fungi
C. Elegans usually live in soil. They are not parasitic they are freeliving. They usually tend to feed on funi and bacteria.
Did you mean the worm C. elegans? Caenorhabditis elegans is a soil-living, unsegmented roundworm which was discovered in 1900. C. elegans is used as a model species for the development of animal neurological development.
Collemopsidium elegans was created in 2002.
Usually, but mutations could affect the number of neurons.
Centris elegans was created in 1874.
Oenopota elegans was created in 1842.
Cancricepon elegans was created in 1886.
Cartodere elegans was created in 1850.
Calyptranthes elegans was created in 1895.
Cyclaspis elegans was created in 1907.
Georissa elegans was created in 1894.
Cneorane elegans was created in 1874.