QT spots on PBT using Coppersafe??

tikalize

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These fish have been qt for a week with the recommended dose of Coppersafe. Anyone know what these spots are on the powder brown? Fish were not sick prior to qt.

20210919_181550.jpg 20210919_181545.jpg
 

Jay Hemdal

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Interesting. The picture isn't super clear, but that is reminiscent of this issue: (from my upcoming fish disease book)

Filigree disease – Huffmanela sp. and related nematodes
Occasionally, marine fish will be seen with a highly distinctive skin lesion that looks a bit like a filigree tattoo, or sometimes, a single meandering line. Moray eels, freshly caught, will sometimes show these symptoms, as will certain sharks. Apparently, the meandering lines are formed as the nematode burrows under the fish’s skin, close to the surface, laying dark eggs that then create the line. Levamisole administered orally at 10 mg / kg may work to reduce the parasite numbers. However, fish showing these lesions are otherwise asymptomatic, and the lesions typically heal within a month or two. This may mean that these nematodes have a secondary host in their life cycle, and so are self-limiting in aquariums.


Jay
 
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