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Since I didn't get to bring home the little betta from the childcare center I was hoping to rescue, I am doing a little more research. Since I only plan to get one betta plus otos (otos first) for my new 10 gal tank, I was wondering which gender of betta to select. What are the differences that you seasoned betta mommies & daddies have noticed (I know what is generally listed in articles)? Any advice?