Ok, it seems like there are a million threads asking about betta tankmates. Well, here are some FAQ's and my opinions on them.
Q: Can a Betta live with white cloud mountain minnows?
A: Yes, they can. But only under the right circumstances. They need to be in a 10 gallon minimum, filtered and heated tank. Filtered because there's going to be a lot of poop in there, and heated because I personally think bettas do better in heated water. The filter needs to be current killed, there is a pinned thread about it. Or it needs to be an UGF or one where you can control the flow. The minnows are schooling fish that need to be kept in a group of at least six to be happy. Bettas can be nippy at the white clouds, and vise verse, so watch them. It all depends on the fish you have.
Q: Can I keep a betta with an african dwarf frog or a snail?
A: Yes, but once again, only inder the right circumstances. Both snails and frogs are extremely messy. They produce a lot of waste. I wouldn't keep them in anything less than 2.5 gallons. If you do keep them in a 2.5, be prepared to do bi weekly water changes. Apple snails are an iffy choice, because they are SO messy and get quite big. (talk to bettamomma) but I have not heard of anyone having issues with mystery and ramshorn snails. If the betta is nipping at the african dwarf frog at all, the frog needs to be taken out. But once again, it all depends on the fish. My bettas have always been OK with them.
Q: Can bettas live with my livebearers?
A: they CAN, and some people on this forum have done so with success, but I wouldn't. Livebearers have long fins and bright colors, hence they resemble a betta. You could end up with dead fish, since we all know how bettas fight.
Q; Can my betta live with tetras?
A: No. they shouldn't at all in my opinion. Once again, people have done this successfully, but most tetras (neons in particular) are the nippiest darn things, and will tear apart your betta's delicate fins.
Q: Can my betta live with ghost shrimp?
A: Yes. But the shrimp are usually eaten by the betta. And the shrimp, I've heard, need iodine in the water to thrive, and this shouldn't be in betta's water.
Q: Can my female bettas live in a species tank?
A: Yes, but you need at least 10 gallon. And no more than 6 girls, no less than 4 will usually get along. Make sure you watch close to make sure no one gets ganged up on. You can keep a ton of girls together, it is really unlimited. but I wouldn't ever keep more than 6 in something as small as a 10 gallon.
Q: can my females live in my community tank?
A: I have found that females can live with exactly what males can. They are aggressive too. They might not fight other girl bettas, but they are fiesty little buggers. Once again, some people have kept them no problem with other things, but it isn't always a good idea, nor is it usually safe.
Thanks for reading, feel free to comment.
Edited: Forgot one.
Q: Can males and females live together?
A: Not unless you want a tank of dead fish. They should only be together if you are spawning, or if the tank is full of fry.
Q: Can a Betta live with white cloud mountain minnows?
A: Yes, they can. But only under the right circumstances. They need to be in a 10 gallon minimum, filtered and heated tank. Filtered because there's going to be a lot of poop in there, and heated because I personally think bettas do better in heated water. The filter needs to be current killed, there is a pinned thread about it. Or it needs to be an UGF or one where you can control the flow. The minnows are schooling fish that need to be kept in a group of at least six to be happy. Bettas can be nippy at the white clouds, and vise verse, so watch them. It all depends on the fish you have.
Q: Can I keep a betta with an african dwarf frog or a snail?
A: Yes, but once again, only inder the right circumstances. Both snails and frogs are extremely messy. They produce a lot of waste. I wouldn't keep them in anything less than 2.5 gallons. If you do keep them in a 2.5, be prepared to do bi weekly water changes. Apple snails are an iffy choice, because they are SO messy and get quite big. (talk to bettamomma) but I have not heard of anyone having issues with mystery and ramshorn snails. If the betta is nipping at the african dwarf frog at all, the frog needs to be taken out. But once again, it all depends on the fish. My bettas have always been OK with them.
Q: Can bettas live with my livebearers?
A: they CAN, and some people on this forum have done so with success, but I wouldn't. Livebearers have long fins and bright colors, hence they resemble a betta. You could end up with dead fish, since we all know how bettas fight.
Q; Can my betta live with tetras?
A: No. they shouldn't at all in my opinion. Once again, people have done this successfully, but most tetras (neons in particular) are the nippiest darn things, and will tear apart your betta's delicate fins.
Q: Can my betta live with ghost shrimp?
A: Yes. But the shrimp are usually eaten by the betta. And the shrimp, I've heard, need iodine in the water to thrive, and this shouldn't be in betta's water.
Q: Can my female bettas live in a species tank?
A: Yes, but you need at least 10 gallon. And no more than 6 girls, no less than 4 will usually get along. Make sure you watch close to make sure no one gets ganged up on. You can keep a ton of girls together, it is really unlimited. but I wouldn't ever keep more than 6 in something as small as a 10 gallon.
Q: can my females live in my community tank?
A: I have found that females can live with exactly what males can. They are aggressive too. They might not fight other girl bettas, but they are fiesty little buggers. Once again, some people have kept them no problem with other things, but it isn't always a good idea, nor is it usually safe.
Thanks for reading, feel free to comment.
Edited: Forgot one.
Q: Can males and females live together?
A: Not unless you want a tank of dead fish. They should only be together if you are spawning, or if the tank is full of fry.
! About the ghost shrimp, do you think they can live with bettas once they're like over an inch in length because I have a ghost shrimp over an inch and I was wondering if it as alright.
they're tougher and they grow quite HUGE. Well over 3 or 4 inches in length. I've had several escape the mouths of my cichlids in the big tanks and after they grow to a certain length they get downright nasty. They'll snap at the fish and try to catch them. I can't even tell you how many times I peered in my smaller fish tank and found them munching on my khulies 
