About two weeks ago I found 3-y-o Genghis the Betta lying on his side in the gravel at the bottom of his tank. I stuck a net in the tank to get him moving, and he floundered around, but couldn’t swim up to the waterline.
I pulled him out of his tank and into a hospital (3.5 gal.) tank, and I rigged a plastic baby fish trap on an angle at the surface, so that one end has about an inch of water, and the other goes to about 2.5 inches. That way he can lie where he likes, but still get his mouth out of water to breathe. (He seems to be struggling, even though the water quality of both tanks was/is fine).
Anyway, I figured he’d go pretty quickly, but two weeks later he’s still alive and exactly the same. He’ll eat 2-3 Betta Bites a day (if I drop them in front of his nose), but he still can’t hold himself upright, or swim for more than a second or two. I did treat him with a course of Maracyn (just for lack of anything better to do), but saw no difference.
Anyone have a suggestion for something else to try? He’s been my buddy for a long time and I want to help him. His quality of life sucks right now, but I can’t bring myself to do something cruel to end it. How about a method to gently euthanize a fish?