i came across a couple photos of two bettas that i had years ago ~
i used to like to "rescue" bettas from pet stores. basically find the sickest, on the brink of death ones i could find, take them home, and cure them...
i kept them each in 2 gallon tanks. i lived in san diego at the time, so i never needed a heater. i ended up with 7 sick fish once, and the daily water changes were too much. needless to say, i don't do this anymore.
Gimli, who totally recovered, and lived a happy life:
Ghost, who was a hard one to cure, but was super feisty, and even while ill and on antibiotics, he blew crazy bubble nests all the time:
thanks for looking. ^_^