I’ve made a previous post on the condition of my old HMDT betta, he’s had a tumor along the line between his analfin and body for quite some time now slowly becoming more lethargic overtime. His tank parameters are nearly the same as last time just with a slight change in the nitrates, nothing too drastic. He also seems to be forming yet another tumor near his gills on the right side. Within the past week or two his activity was decreasing a lot faster than normal and for the past about 4-5 days he now spends nearly all his time on a bottom corner of his tank. He barely moves even if i’m trying to coax him up, and once he finally realizes i’m there he’ll come up like always but then very quickly after he makes his way back down to his spot. He’s seemed the tiniest bit more active today, but after a second of swimming he’s always back down in the corner and I’ve only seen him swim four times at most in the last 11 hours. I’m hoping that I missed some times he swam, but I’ve been home all day. I really don’t believe it’s a swim bladder issue as he has no problems whatsoever swimming, staying upright or afloat, but he just stays on the bottom now. I’ve tried salt baths, medication, fasting, quarantining him, done continuous water monitoring etc and everything just seems to be adding more stress. With him being nearly 5 years old or possibly older + everything going on, would it just be best to euthanize him and let him rest? I’ve been debating since yesterday but I’d hate to lose him and am so afraid to do so incase there’s anything else I could possibly do for him. Any suggestions?