Giving too much attention to small details and wanting everything to be correct and perfect: (Cambridge Dictionary)
Having a strong dislike of anything dirty or unpleasant. (Cambridge Dictionary)
Excessively particular, critical, or demanding; hard to please: (Dictionary.com)
Requiring or characterised by excessive care or delicacy; painstaking. (Dictionary.com)
Showing or demanding excessive delicacy or care. (Merriam – Webster)
What are the examples of fastidious bacteria?
Antimicrobial Susceptibility Testing: Special Needs for Fastidious Organisms and Difficult-to-Detect Resistance Mechanisms