Given the options its likely that she is young - which I would suspect becuase I did not think she was sexually mature when I saw her saddled which surprised me. I checked for the eggs this morning, they are gone.... (maybe another one picked them up to love them
)
They are in a shrimp only tank, so option two is a definite no, and today is the scheduled water change date, so I don't know that #3 is viable, although I will double check nitrate and ph to be sure.