omg off topic real quick what type of betta is you profile pick its amazing
That's not a betta, that's a different type of species. lol
Sorry to bring things up again, (>.>) BUT! Danios need 20G+ tanks. 10G are too small for their active needs... They also like being in groups to feel safe and secure. Yeah, sorry... I have a habit have correcting wrong info. CB was right there..
Good luck with the 30G. :D
Over hundreds of bettas die in their small, dirty cups each day. Only you can help them live. Research and then save them, today!