I somewhat recently Aquired a young male betta, not sure of his age but he's about half the size of my adult male betta. He has difficulty eating the standard betta gold pellets I feed my adult, so I either crush those or I have micro pellets I'll give, but they rapidly decrease the water quality.
Anyways, since I woke up this morning he has been laying on the bottom of his tank. He's breathing, but has little to no fin movement and shows no interest in food. I actually stuck the net in there to get him to move and when he does swim, he swims in a normal horizontal position, no shifting to one side or the other, so I don't think it's a swim bladder issue. I'm not sure if it's just stress, because I did add some new silk plants last night during a water change, they were thoroughly rinsed in boiling water first.
He's in a 2.5 mini bow, heated to about 78-79 degrees, gets a once weekly 100% water change. I know he probably needs more but he doesn't do well wi partials, and that's what I've been doing for my adult male for a year and he seems to do well with it.
Help would be appreciated.