Disease question
I have a 90 g tank. It is somewhat overstockeds based on mature size. All of the fish are currently 2.5 to 3 in or less. Most are 2 in or less. It contains (Gourami) 3-3 spots, 3 gold, 3 Opaline, 3 Giant (Banded), 2 Pearls, 2-Powder Blue (Dwarf), 1-Flame (Dwarf), and 3-Giant Brochis Catfish. I do 25% PWC weekly. On 3/8/2008 the Ammonia=0, Nitrite=0, Nitrate=10-15 ppm. On 3/4/2008 KH=5, GH=6, Oxygen=7-8 mg/l, and Phosphate=0.25 ppm. The tank has been established since early Nov. 2007. The tank does not contain any live plants. It has a Fluval 405 canister and a 25 Watt UV Sterilizerand air stone. All fish look good, are eating well and are active. The diet consist of Flake food, freeze dried blood worms, freeze dried tubifex and Sinking Wafers (Hikari) (on a rotating basis). Within the last week I have lost 2 Dwarf gourmis. Both were eating well and active until just before their death. They developed over a period of a few days a slight bulge over the anal fin at about the mid point. Directly below this bulge the fin roted away leaving only the spines. The area affected was only about 1/4 in. of the anal fin. Up until close to the end the fish continued to eat well and remained active. The last day the fish quit eating and remained hidden to its self most of the time. They would come out at feeding time, but usually would not feed. The two fish did not experience this at the same time. First one, then the other. My question is will this likely affect the other fish and what do you think it is? Is it common in Dwarf gourmis? What kind of treatment should I have done? Should I do anything to the rest of the fish? I did purchase these two fish at the same time from the same supplier. I do have a quaratine tank with a pH of 7.5, ammonia and nitrite =0 and nitrate of 5. Jimmy McHaney Husser, LA
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Category: AquaticLife
