Forgive me if I'm doing this wrong, but I'm looking for some help/advice. My goldfish died today very unexpectedly. We won him (and 2 others) at a fair 5 years ago. He was a basic goldfish and was larger than the others. I have a 50 gallon tank with a canister filter and feed tetra flakes, pre soaked so they sink. About a year ago, one of my Goldie's passed away from swim bladder, but he had suffered from it for a year plus. He would either float or sink, until I gave him peas. I feel like this fish had weird symptoms come on so quick
I treated the water with an antibiotic from the pet store, but it was too late. when I noticed him acting funny, yesterday, I did a half water change. Now that he's passed and the water has been treated, I'll do another partial water change tomorrow. I just ordered new life spectrum food, and plan on upping the food game.
I guess my question is, what happened? Whatever it was, it happened quick. He was also such a healthy looking fish. We are so sad and miss him dearly
I would appreciate any advice I can get. Thank you

I guess my question is, what happened? Whatever it was, it happened quick. He was also such a healthy looking fish. We are so sad and miss him dearly
