Looks like Trichopsis pumila. Or a sparkling gourami.
How can you tell if male or not?
Hope this helps. I was told he was good as long as only Betta but its friendly. I thought I was being good as I checked obviously lied to for the sale.
I just seen it swipe at my other little female molly all she did was swim past him. Can I pop him in a box I have when my mollies have fry? Just a box that you keep fry in till big enough to sell or swim freely so they don't get eaten just till I figure out how to keep him? And maybe buy his own little tank.