brett2003 Posted October 8, 2012 Report Share Posted October 8, 2012 Hi all, I have a sick Harlequin that seems to have come down with something I've never seen before. Was wondering if anyone else had any insight? Symptoms I have observed: Isolating himself from the rest of the school Colour is faded Dorsal fin is collapsed/down There is a colourless spot on the black triangle marking on both sides of his body There is slight silvery sheen on his caudal fin, and on some other parts of his body He's cowering in the plants at the back, so it's hard to get a decent photo, but I've had a go anyway. All the other fish in the tank (loaches, tetras, gourami, catfish other rabsoras) are fine, water chem is fine. Quote Link to comment Share on other sites More sharing options...
Sheepsnana Posted October 8, 2012 Report Share Posted October 8, 2012 Is the spot in the same position on both sides? Is it protruding or is it just colour? Quote Link to comment Share on other sites More sharing options...
brett2003 Posted October 8, 2012 Author Report Share Posted October 8, 2012 Is the spot in the same position on both sides? Is it protruding or is it just colour? It's hard to tell (because of where he's hiding in the tank), but it looks like it's in the same place on both sides. There's no swelling that I can see. Quote Link to comment Share on other sites More sharing options...
brett2003 Posted October 9, 2012 Author Report Share Posted October 9, 2012 Hmm. A Cory just dropped dead too - no obvious symptoms, just one day he's fine, next day he's dead :-/ Quote Link to comment Share on other sites More sharing options...
Sheepsnana Posted October 9, 2012 Report Share Posted October 9, 2012 Doesn't sound good. Who does your water testing? When was your last test? Quote Link to comment Share on other sites More sharing options...
brett2003 Posted October 10, 2012 Author Report Share Posted October 10, 2012 Nothing too obvious - almost no detectable nitrate, no nitrites, pH of 6.8 :-/ Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted October 10, 2012 Report Share Posted October 10, 2012 Have a look with a torch at night when the lights are out. It is the easiest way to spot velvet. This may be the cause and looks like the fish has been sprinkled with very fine pepper. Quote Link to comment Share on other sites More sharing options...
Adrienne Posted October 10, 2012 Report Share Posted October 10, 2012 It could be a worm. Quote Link to comment Share on other sites More sharing options...
brett2003 Posted October 10, 2012 Author Report Share Posted October 10, 2012 Hmm, good idea. I'll check this evening. No new fish have been added for a month or so at least, so I'm not sure why a pathogen would just flare up now Quote Link to comment Share on other sites More sharing options...
F15hguy Posted October 10, 2012 Report Share Posted October 10, 2012 could be a tumour mycobacteria can cause tumours and takes ages to show up in a tank Quote Link to comment Share on other sites More sharing options...
GrahamC Posted October 10, 2012 Report Share Posted October 10, 2012 A tumour wouldn't cause the other fish to die ... Quote Link to comment Share on other sites More sharing options...
F15hguy Posted October 10, 2012 Report Share Posted October 10, 2012 mycobacteria would Quote Link to comment Share on other sites More sharing options...
brett2003 Posted October 11, 2012 Author Report Share Posted October 11, 2012 No further deaths that I can see, no sign of 'pepper' like marks, so to speak... He's still quite sickly looking, though Quote Link to comment Share on other sites More sharing options...
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