I've read that bettas are a hit or miss. They will definitely eat babies though.
How many in a 2.5 gallon? I would say 20 if you keep your water quality high. Probably lots more but you probably don't want like 50 in a tank that small.
I suggest Red Cherry Shrimp (RCS) for your first shrimp endeavor. They're cheap, pretty, and very hardy. If you want something different, go with Snowball shrimp. A little more pricey but they are as hardy as RCS. Do not go for Crystal Red Shrimp (CRS) because they are very pricey, and are pretty sensitive.
How many in a 2.5 gallon? I would say 20 if you keep your water quality high. Probably lots more but you probably don't want like 50 in a tank that small.
I suggest Red Cherry Shrimp (RCS) for your first shrimp endeavor. They're cheap, pretty, and very hardy. If you want something different, go with Snowball shrimp. A little more pricey but they are as hardy as RCS. Do not go for Crystal Red Shrimp (CRS) because they are very pricey, and are pretty sensitive.