Different bacterial species have different temperature requirements for growth. Psychrophiles grow best at cooler temperatures ranging from  -5°C to 20°C. These bacteria can be found growing in refrigerators, on snow, in the Arctic and Antarctic, and deep in the ocean. Psychrotrophs are organisms that grow slowly at temperatures below 20°C. Some bacteria, such as Staphylococcus aureus and Listeria monocytogenes can grow on refrigerated food and cause food-borne illness. Mesophiles, which include most disease-causing forms of bacteria, grow best at temperatures ranging from 20°C to 40°C. Thermophiles, which include bacteria growing in hot springs and thermal vents, prefer warmer temperatures ranging from 40°C to 80°C. Hyperthermophiles, which can be found in geysers and volcanoes, grow best at temperatures above 80°C.

Psychrophile
GrowthRange:  -5 to 20 C
Optimum Temperature: ~10 C
Pseudomonas fluorescens (Actually a psychrotroph because it also grows in the mesophile range)
 
Mesophile
GrowthRange: 20 to 45 C
Optimum Temperature: ~37 C
Escherichia coli, Micrococcus luteus, Serratia marcescens, Saccharomyces cerevisiae
 
Thermophile
GrowthRange: 35 to 80 C
Optimum Temperature:  ~55 C
Bacillus stearothermophilus
 
Hyperthermophile
GrowthRange: Above 80 C
Optimum Temperature: variable
Archea such as Pyrolobus

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