I am perplexed by my "otherwise thriving" Betta, who has developed a badly bloated abdomin over the last weks.
He seems normal otherwise, being his spunky self, and there are no other apparent signs of disease. He still acts a bit aggressively towards tank mates.
But he has trouble swimming, tending to float upwards.
Some pics attached...
The only diagnosis I can make is some swim bladder problem. And the literature consistently blames this on overeating. But this seems unlikely in my case.
He has been in the 180 plant tank for about 9 months now, a;ways thriving and very active with good appetite. Food has been only various dried and freeze dried types.