-these are the readings he got from testing the water: ammonia (nh3/nh+4) ppm (mg/l) is .25
-tank size: 29 gallons
-Filter: I think its a power filter, i dont have amodel number or anything because im not there and the boxes for it are in storage.
-He changes the water once a week, recently he did a 50% water change
-2 fish, one is an oranda about 4 inches big, the second is a fantail about 2 or 3 inches
-Aquasafe water conditioner, he has been putting in salt with each water change and said he recently bought something to help get rid of algae
-havent added any fish
-there is a bump right behind the oranda's fin (see picyture) he sits at the bottom and sometimes swims around is very lively when fed but eventually goes back to the ottom. Has been doing this for a few weeks now and a bump appeared today.

this happened before with my other fish..but i want to knwo why its happening to him now We thought the two fish might be spawning since he (or she) keeps getting nosed by the other fish and supposedly has goten fat..i dont really know i havent been there to look at him and webcam doesnt help me very much. My boyfriend took this picture for me. Help please?