Hmm No idea, what type of tank is this? does it have a filter? as i would be cleaning all the rocks out as they may be the cause, but if it doesnt have a filter, all the Good Bacteria in the rocks is going to be destroyed..
which will make the tank start cycling again. Not good for a sick fish. I would give the tank a clean out, with hot water.
Common Name: Swim Bladder Disorder, Swim Bladder Disease, SBD
Scientific Name: N/A
Description: Irregularity of gas bladder
Symptoms: swimming upside down, unable to right self
Cause: constipation, blockage, infection, tumor
Medications: fasting, Maracyn & Maracyn-Two combo
Ingredients: Erythromycin, Minocycline, Tetracycline
Notes: treatment varies by cause, antibiotics not usually necessary
In a fishs world, being unable to right ones-self may be a sign of a swim bladder problem commonly referred to as Swim Bladder Disorder, Swim Bladder Disease or SBD for short.
I would give him a break from feeding anything for a few days to see if it rights itself, now that the pea has probably helped clear out his digestive track.
1 teaspoon of Epsom salts per 2.5 Gallons should also help if there is a blockage in his digestive track, it has known to be used on constipated fish
It is rare to need to use antibiotics for it as usually its blockage or constipation.