Agree, the top blue&white fish is a siamese fighting fish (betta) (betta splendens) and the lower one is a black lyretail/(perhaps sailfin too?) male molly who will want the water to not be too soft or acid probably.
I agree that you could go a bit longer and keep the discussions up before determining whether to do another tank for the betta, situations vary and depend somewhat on fish personalities in the tank. Close observations and notes in your aquarium notebook can turn out to be very valuable in this regard.
It looks like you've got a couple of plants in there that are terrestrial plants, not underwater ones, and they are beginning to do poorly and will eventually die. Plants that have white are never underwater plants and very stiff plants are suspect.
How long has the 10g been up and running and what method did you use to cycle it?
~~waterdrop~~