I agree especially with Bettas.
Bettas prefer low light heavily planted tanks with lots of floating plants I have Bettas that actually eat the roots on floating plants, Throw in some shrimp, It will give the fish something to hunt.
I sometimes spend hours just watching the girls swimming around looking for cherry shrimp among the plants.
I have to disagree with that. I would not get a betta. They are not a good community fish, if you did get the betta that would be your only fish in the tank. You want a schooling tank of fish, cardinal tetras are nice but I do like neons better. There are rummynosed tetras, which are another favourite of mine, Harlequin Rasbora, Rasbora heteromorpha are a lovely schooling fish.
A bigger types of tetras!
Black skirt tetra/black widow tetra, Gymnocorymbus ternetzi! Black skirts are one of the easiest tetra species and can be found in almost any aquarium store. They don’t demand specific water values, although they will appreciate it when the lighting is slightly subdued by floating plants and a dark substrate. An aquarium of at least around 20 gallons/80L is a good idea, as black skirt tetras are active and need plenty of swimming space. Live plants are appreciated, but keep them limited to the edges of the tank!
Glowlight tetra, Hemigrammus erythrozonus. Like the other tetras, glowlight tetras prefer slightly acidic, heavily planted waters and a blackwater setup is actually the most natural choice for them. Their super peaceful nature makes them one of the best community fish and they will do well combined with most species that require similar water values. Other tetras are a good option and the ones discussed in this article can actually all be combined if your aquarium is large enough. Just be sure not to house your glowlights with any fish big enough to eat them! A setup of at least around 18 gal/70L should be enough to house a proper group of glowlight tetras.
These aren't all schooling fish, these are just some of my favourites

Hope this helps
~Karen
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