so i got a 20 gallon long tank, it should be cycled (2 months with life...), and i currently have 2 mystery snails, 1 "other" snail (i know it's name, i just can't remember it atm) and 2 prego ghost shrimp.
for plants i currently have 2 ripped up marimo moss balls and i plan on buying more "leafy" plants soon.
my question is, can i properly care for a male betta or 3 female bettas in this set-up, NOTE: either 1 male betta OR 3 female bettas, not both. i used to care for bettas previously (all male) my first one was unfortunately not very well cared for (i was going off of walmarts expert advice, it's almost funny now that i think about it) and he lasted for 2 years before dropsy took him, the second one i cared for very well and he lasted for 2 years before a cold snap took him (frost on the glass cold...) and my third male only lasted for 3 months before a tank-wide die-out took him (all were very hardy fish species). I know that these fish can live for 5+ years so i want to be sure that i take care of my newest betta addition(s) and i just want to be absolutely sure that my new tank will be enough for him/the girls (which ever case).
plz help me out, this is prolly a super newby question but i just really loved all of my bettas (the same name too, the newest male will/would be named Mr. Fish the fourth, if it's the females then i would i need some more creativety).