i have a blue simese (nost spelt right) fighter (male) and i also have 3 neons in the tank with him i did have 4 but one got attacked ages ago we think from the fighter but we will never know apart from when he was dead the fighter did eat him i managed to save harf a fish but was to late im only a begginer and wouldnt really know much but if you do add a betta or fighter or something like that just beware that the odd fish will go missing
hope that helps
vanessa