Hi, recently i got a new goldfish. It was the first time that i get a goldfish that is not from my city, so the shipment was not easy and he arrived very stressed. The first few days he was at the bottom of the tank and very lethargic. It took a full week before he got better and start eating well again and stop the bottom sitting and the fast gasping. However i have noticed that he has some swim problems, i have been giving peas for the last 3 days (is not the first time that i have swim bladder problems with one of my godlfish, however always giving them peas seem to fix the issue) and havent seen any improvement.
He is in a 120 litter tank (the heater that you can see in the video is off). Amonia 0, nitrite 0, nitrate between 5-10. https://youtu.be/P7wsX7-CTSg