Pygmy corys like to be in large groups, more like 12. Theyre very active and personally I like to see them in a tank larger than 10 gallons.
Otos need a really well established tank, lots of plants, green algae, blanched zucchini and other veggies, and pristine water. As you haven't even got the 10 gall yet, I think we can say its not well established! I don't just mean the filter here, the whole tank develops a biofilm and just an 'aged' quality to it that the otos can graze on. Theyre so picky and can die for no obvious reason. I really don't think they're suitable for your tank at this stage, perhaps six months down the line. Also I'm sticking to the original brief here by saying they are not colourful and you often don't see much of them.
Neons I would avoid, again because they like to be in large groups (we all say a minimum of 6, but in reality that's still nothing compared to how they normally live). IMO tetras should be 12+. I have also had a betta shredded by living with fin-nipping neon tetras. Up to you of course.
Chilli rasboras might work, you could probably add a more like 9 as they're tiny. Bit boring though.
I think you'd be better off with a fish that likes company of its own kind but is not technically a schooler, that way you don't have to worry about numbers as much. Endlers have more personality than tetras and rasboras and are not going to be slinking away at the back because they're in a tiny group. They are colourful and active and should cause no problems with your female bettas.
But, it's your tank, in reality you can add what you like
Otos need a really well established tank, lots of plants, green algae, blanched zucchini and other veggies, and pristine water. As you haven't even got the 10 gall yet, I think we can say its not well established! I don't just mean the filter here, the whole tank develops a biofilm and just an 'aged' quality to it that the otos can graze on. Theyre so picky and can die for no obvious reason. I really don't think they're suitable for your tank at this stage, perhaps six months down the line. Also I'm sticking to the original brief here by saying they are not colourful and you often don't see much of them.
Neons I would avoid, again because they like to be in large groups (we all say a minimum of 6, but in reality that's still nothing compared to how they normally live). IMO tetras should be 12+. I have also had a betta shredded by living with fin-nipping neon tetras. Up to you of course.
Chilli rasboras might work, you could probably add a more like 9 as they're tiny. Bit boring though.
I think you'd be better off with a fish that likes company of its own kind but is not technically a schooler, that way you don't have to worry about numbers as much. Endlers have more personality than tetras and rasboras and are not going to be slinking away at the back because they're in a tiny group. They are colourful and active and should cause no problems with your female bettas.
But, it's your tank, in reality you can add what you like
