First time poster here. My goldfish has been swimming upside down all day. He's never done this before, but this morning we found him upside down. He's stopped swimming, and is just floating. His breathing has slowed. What do we do? We tried feeding him a pea but the pea sinks, and he's floating, so he can't eat it. When we put it in front of his mouth, he doesn't want it.
People say to make the goldfish fast, which we'll do, but I don't see him lasting much longer if his breathing has already slowed down and he isn't trying to flip himself over anymore.
We've moved him to a .3 gallon tupperware. The pet store tested our water and said pH was low so we raised it. We also added some aquariums salt.
Any suggestions? I've read people post about how their fist have been upside down for long periods of time. So, it seems like we detected this early, but then again, he's rapidly deteriorating.
He was originally in a 2.5 gallon aquarium which he shared with a bottom feeder.
The aquarium is freshwater.
The aquarium has been set up for about 2 months.
There is one live plant in the aquarium.
We have a whisper filter.
The tank gets natural sunlight during the day.
Last water change was last night, about a quarter of the tank.
We use a small lightbulb during the day, turning it off at night.