What's Wrong With My Adf? :(

[AlitaConejita]

Sorry if this is in the wrong forum - hope someone can tell me what's wrong and what I should do.

Yesterday my ADFs were fine. Today, one of then has a swollen side to his/her belly (pics below).

Pip, the frog, is in a 5 gal with one other ADF and 4 ghost/grass shrimp. The water parameters are:
pH 7.6, ammonia 0, temp 80F. The tank has a lot of Java moss and a few small moss balls.

Pip is behaving normally - active, and eating. I haven't changed the food (zoomed frog and tadpole micro pellets). The only "new" thing is the shrimp and some additional java moss that I added over 1 week ago.

The tank has a sponge filter but is not cycled.

The other ADF looks normal and is behaving normal.

What's wrong with Pip? What should I do?

 

[DerpPH]

Probably ammonia poisoning or is bloated from overeating or shrimp ingestion

 

[AlitaConejita]

No ammonia in the tank - I check weekly before water changes and I checked again last night when I saw his condition.
All shrimp are accounted for.

I guess it could be over eating but I haven't changed the amount of food I put in the tank even with adding the 4 shrimp since someone had already mentioned that I might be giving them too much food. (And two of the shrimp regularly make it to the food fish before the frogs - eat about 1/3 of the pellets before the frogs get there).

Why is the swelling only on one side? Is that the stomach? What do I do about it?

 

[AlitaConejita]

Update: it is almost 24hrs since I noticed Pip had a large ball-like swelling on the left side of his abdomen. I wasn't able to find him in the tank this morning (easy to hide in all the java moss and betta log). I just fed them now and noticed that the swelling is almost completely gone. If I hadn't been looking carefully, I wouldn't have noticed anything now.
Oh - and I looked at frog anatomy (http/course1.winona.edu/sberg/118s00/Frog/stomach2.jpg) and did confirm the stomach is in the area were his swelling was.

 

[DerpPH]

Update: it is almost 24hrs since I noticed Pip had a large ball-like swelling on the left side of his abdomen. I wasn't able to find him in the tank this morning (easy to hide in all the java moss and betta log). I just fed them now and noticed that the swelling is almost completely gone. If I hadn't been looking carefully, I wouldn't have noticed anything now.
Oh - and I looked at frog anatomy (http/course1.winona.edu/sberg/118s00/Frog/stomach2.jpg) and did confirm the stomach is in the area were his swelling was.

 
 
He was just bloated from overfeeding probably