I recently edited this question on Pets.SE regarding fish compatability. The original author used mixed capitalization of "Betta" fish, but did not capitalize "neon tetra".
The Wikipedia entry on Betta states the following:
There is often much confusion in terminology regarding these fish. Siamese fighting fish, B. splendens, are frequently sold in the United States simply as bettas. Fish fanciers are thus often unaware that, as of 2006, there are around 65 species classified within the genus Betta. A further source of confusion is that while the generic name Betta is italicized and capitalized, when used as a common name it is usually not capitalized.[4]
Yet, throughout the article and even the citation above, Betta is either lower-case or capitalized and infrequently italicized. I'd like to chalk that up to poor article editing, but ultimately this leaves me confused.
How should {Betta / betta / Betta} be presented within the context of the question I linked, and likely standardized for future site questions?
I'm asking here, not on Pets Meta, because the language subject matter experts are here.