Okay, so no fish in such a small tank, but perhaps start with some ghost shrimp and then sea what can happen from there shrimp and snail wise. Thanks for all your help guys! One last question, if I get snails or shrimp will they breed? I mean, it must be hard to tell the gender of them, I really don't want loads of snail or shrimps! Thanks again!
Keep in mind that some bettas might try to eat your shrimp o.o I put a shrimp in a tank one day, came back a few hours later, and the shrimp was gone. Make sure to get a shrimp that can't fit in your betta's mouth!
Ok, just one thing about the snails though... they produce alot of stool, and , atleast for my little apple snail, they often leave behind some sort of slime trail?
In my opinion, ghost shrimp aren't that fun. they're see- through, so its hard to spot them in your tank. plus, they grow pretty big and have territorial issues. cherry shrimp stay small and adorable :3 they are also very pretty colors from light light pink andslightly clear, to deep red. They also are friendly with each other :) im getting 5 cherr shrimp for my 2.5 gal
greena This thread is over a year old so I'm sure the OP did what ever they were planning to already. But goldfish and bettas shouldn't be mixed since bettas are tropical and goldfish are coldwater fish. Also goldfish produce a ton of waste and what I've read says they need double the filtration of normal fish but at least regular filtration. Anyways four gallons is too small for fishy tankmates.