how many gallon do they live in
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i know you can nt put them toghter but can they live all on there lone
Not always, there are an endless variety of betta and it is the "mutts" veiltail bettas the have wavy fins. Most males have larger fins than females but like the plakats some males have short fins.Bettas have many different species. Males have the longer wavy fins, females have short ones. They like warm water and bloodworms by the way.