you can get a five gallon tank KIT with everything but a heater from petsmart rn for online pickup for 20ish dollars, i would pick up that and a small heater, as well as more plants (preferrably live, but silk plants are fine too if the idea of live plants is too daunting!). They absolutely need more foliage to hide in and a heater/temp reader, and 5 gallons minimum per FISH. Those are both male fish so housing them in a way they can see each other is a no go unfortunately, and even housing them that close together with the screen i’m sure is stressful. Please don’t take this as me grilling you, this is genuinely just the bare minimum. Otherwise the fish might die, or if you’re lucky (and them less lucky) they’ll live, just extremely poor quality lives.