Fluval Chi 5 Gallon Stocking?

Make sure the tank has been cycled before putting any more fish in their, start with the betta, give it 6 weeks and make sure you dont overfeed as the 6 week period would be when its cycling and then introduce, otocinculus catfish, cherry shrimp, yamato shrimp, apple snails, onion snails, zebra snails. I wouldnt advise any other fish in their being so small, A small shoal of neons probbaly would survive but their isnt enough room for fish like this to swim as they do.