Bloated Silver Dollar

One of my silver dollars has a bloated stomach. I put him in a 10g hospital tank. I am trying to feed him cooked peas but he's not interested in any food. He's been in the hospital for three days now and still won't eat - could be stressed without his buddies in a small tank. His scales are not pineconing so I don't know if it's dropsy. Just his lower half is bloated like he ate too much. I just added 1/2 tb of epsom salt. What else can I do? I haven't tried meds yet since I was trying to get him to eat the peas in case he was constipated. Any other food to try? He came out of well-established 75g tank that's been up and running for over a year. I don't know how old the fish is since he came with the house I bought. I've attached a head on picture.

Hmm looks like dropsy to me, Is it floating not able to swim properly?
How was it when it was in the tank was it bloated, Is it male or female?

What did you feed the fish before he became bloated, can he maintain his balance in the water, and what does it look like when he goes to the toilet.

also, daphnia is another high fiber food that has the same effect of peas.

How do you tell the sex of a silver dollar? I don't know if it's male or female. My boyfriend feeds the fish in the 75g so I am not sure what he ate. Silver dollars seem to eat anything and everything. It could have been veggie flake or most likely tubifex worms. Sometimes they grab the sinking wafers. There are loaches, tetras, and danios in the 75g tank as well. He got bloated while in the 75g tank and I took him out maybe two or three days after I noticed it so he's been bloated for about a week. He swims fine and is not floating but when still, it seems like he wants to pitch nose down a little and has to keep beating his pectoral fins to stay level. I know his diet should have more vegetable matter but my boyfriend is lazy about it. There are live plants in the 75g tank for the SD's to nibble if they want. I have not seen his poop since in the 10g but then again he's not eating. He only goes nose down slightly as in this picture and hangs mostly at the bottom of the tank.

Start with 1 teaspoon epsom salt per 10 gallons, increase by a teaspoon daily to 3 teaspoons per 10 gallons. This will ease constipation, which it sounds like if the fish was getting too much protein wihout the necessary roughage from vegetables.

I agree as it sounding like swim bladder, is his tail bent as it looks abit odd to me.

Yeah, his tail seems to be curved up. He used to be more oval and he seems slightly bowed. I already added 1/2 tbsp epsom which is 1.5 teaspoons. should I do a small water change to lower the concentration? I just caught him crammed in a corner by the filter completely vertical with his face up. I disturbed him and he's back to "normal". SD's do weird things when they are stressed and that could be all that was???

Does he feed live tubilex or frozen or freeze dried.

If he is going face up, i would take that as a sign of added stress, so i would go for a partial water change.

He feeds the freeze-dried tubifex. Right now, it's San Francisco Bay brand "Bacteria Free". I did a 20% water change and turned the light off, we'll see how he does the rest of the day. The SD's seem to be hardy fish so my hopes are high.

Good luck.

Just a side note, freeze dried foods are very hard on the fish's digestive system, so it is generally recomended to first soak them in water before giving them.

Silver dollars are primarily herbivors and should be fed a diet which contains mostly vegetable matter, Rommaine lettuce, frozen spinach and spirulina are most favoured but algea wafers and blanched courgette (zuchinni) or cucumber will also be eaten. Allowing the fish to eat too much protein rich food will result in problems like these so foods like tubifix and bloodworm should be fed very sparingly. Switching the fish to its proper diet should resolve the problem.

BTW the fish in the picture is a female, the sexes can be told apart by the anal fin on which the males is a brighter red and straight without the curve towards the bottom.