Sorry, no water parameters. When I've tested them they've always been 0 ammonio, 0 nitrites, 15 or so nitrates. The tap water has nitrates to begin with and the numbers usually match.
Anyway, the fish is a Conga Tetra, I have two. They are in a tank with 8 juvenile Empire Gudgeons. I scrubbed algae off the walls this past sunday, Feb 12, 2012. This might be an injury and/or an injury with an advantageous infection.
Only one fish is involved, all the other fish appear healthy. For ease of sake, just refer to fish as 'him'. Don't know what sex it is.
First observation: evening of Feb 13, 2012. Fuzzy white patch on left side of fish, about 1/2 inch down from dorsal fin. I put him into a quarantine tank. After the brouhaha of moving fish around the fuzziness had disappeared leaving what looked like a thin rope of something hanging down.
Morning of Feb 14, the rope has disappeared but the area there are several red streaks running from the bottom of the doral down to the same patch of scales. The scales themselves appear to be slightly detached, giving a pine cone appearance.
I have already treated with Tetracycline and, per directions, will repeat the dosage tonight.
Fish does not like 5 1/2 gallon quarantine tank at all.
Any idea what I'm dealing with? Tetra will be ok?
Any other input would be appreciated, Thanks.