Hi, so I'm a new ranchu keeper. Recently I bought another ranchu and it was pretty active for a few days, till I notice he's floating a bit upside a few times. I kinda brush it off since I knew that ranchu sometime has tiny fins to keep them balance, but I got concern since he flipped upside down a few times. He's still very active and swims normally, It may be a case of swim bladder? I'm not sure though and I need help. I also notice he blows out bubbles.
Info:
Diet: saki- hikari fancy goldfish (purple ones), Repashy gel food.
lives in 75 gallon. all nitrates, ammonia, nitrite all zero
here's a video of him.