It seems you might be asking about "Nikolai bacteria", which is not a recognized scientific term. There's no known bacteria species or genus with that name.

It's possible you've misheard or misspelled a different term.

Could you please clarify your question? Perhaps you meant:

* A different bacterial name: Do you have any other information about this bacteria, such as its characteristics or where you encountered the name?

* A specific bacterial disease: Are you asking about a disease caused by bacteria, and "Nikolai" is part of the name?

* A researcher or scientist: Maybe you are thinking about a researcher named Nikolai who studies bacteria?

Please provide more context so I can help you find the information you're looking for!