I have 12 bettas (all boys). I'm working on moving them all into divided 10 gallons, but in the meantime I have:
Sunset - 1 gallon. Brox - 1 gallon. Jewel - 1.5 gallons. Mouse - 2.5 gallons. Byte - 3 gallon. Skye - 3 gallon. Peaches - 5 gallon. The General - 5 gallon. Lock and Key - divided 10 gallon. Tips and Rubic - divided 10 gallon.
Now, if we're including other fish too: (keep in mind that the tanks will be upgraded as needed, many of these fish are juveniles)
20 gallon - two goldfish - Golden and Dawn.
20 gallon - 5 black skirt tetras, 2 african clawed frogs.
30 gallon - Meta and Attila, the lesbian convict breeding pair (well, they try), Frank the red zebra, and 5 albino tiger barbs.
30 gallon - Bruce the green spotted puffer.
40 gallon breeder - Mercy the flowerhorn.
55 gallon - Brett and Spot the male convicts, Bumble and Bully the male firemouths, Bermuda the blood parrot, Glitter the gold severum, Sparkle the jewel, and Web the EBJD.
75 gallon - Dahlia and Cloud the blood parrots (Dahlia is currently in a lesbian breeding relationship with a girl convict. seriously, how do I keep finding lesbian fish?), Balsa (Dahlia's partner) and Kayla the female convicts, Karley the blue acara, Godiva the chocolate cichlid, Anne the firemouth, and two unnamed electric yellows, and one unnamed red zebra.
Smokey the crowntail
Amethyst the veiltail
Thief the halfmoon