I am about to cry....my calico, Ripley, has developed a large lump on his left side. It is about 2cm wide, appearing to be pushing the scales out. I cannot take a pic at this time. I keep a close eye on my fish and believe this developed within the last 24 hours. Could this be a tumor? I received my medi-gold in the mail today, and attempted to feed him, but he has not eaten. He just kind of hovers in the water. Params:
ammonia 0
Ph between 6.0 & 6.4
nitrites 0
nitrates 10
20gal tank, running app. 5 1/2 months
Penguin 150 HOB filter
25-30% water change every week
1 fish, app. 2 1/2 inches (was housed with Spencer, a 2" fantail, but Spenc has been in QT since last Sat. for dropsy)
Prime water conditioner added at every water change
no meds yet; only medi-gold (uneaten)
no new fish added
feed peas, pro-gold, spirulina flakes, and frozen bloodworms & brine shrimp as a treat
*Only unusual appearance is the large lump on his left side, right behind his gill
*Unusual behavior is 'hovering' in the tank; may swim from one spot to the next, but hovers in between.
Any help would be greatly appreciated! My mom wondered if maybe my local water could be instigating these illnesses; she suggests boiling first, then standing for 24 hrs, then adding water conditioner before water changes. Or trying bottled water instead of tap water. Would either one of these help?
Thanks.