Does anyone know what are these little worm-like attachments on the caudal fin (see picture)?
I found similar ones on my juvenile C. Concolors bought a week ago. They are now in my 2ft quarantime tank, still feeding well but some of the fins are clamped.
I'm starting on a diluted salt treatment (1 ppt), being the safest route (not knowing what the worm is).
Thanks.
Last edited by atlantis2267 on 23 Nov 2004, 03:41, edited 5 times in total.
I don't think they're anchor worms, or at least not any species I've seen. Do they actively move from their attachment site?
Do you have access to a microscope? (give the size of the organisms even a child's one should do to see more detail).
Be very careful when using any copper treatment in freshwater, and definitely with Corydoras.
This is something that I have see on some of my own fish at times and I only see it on the edges of the fins on young fish. I actually narrowed it down to being caused through heavy feeding of micro worm and once the feeding quantities were reduced they disappeared altogether. I certainly do not think it is anything to get overly woried about.
coelacanth wrote:Do they actively move from their attachment site?
My "worms" are actually smaller than that depicted. At that size, it is actually hard to tell whether they are even moving at all. I need to observe longer.
coelacanth wrote: Do you have access to a microscope? Be very careful when using any copper treatment in freshwater, and definitely with Corydoras.
No microscope. A magnifying glass does not help. On copper, I realised the need to stay accurate on the dosage. Thanks.
Coryman wrote:This is something that I have see on some of my own fish at times and I only see it on the edges of the fins on young fish. I actually narrowed it down to being caused through heavy feeding of micro worm and once the feeding quantities were reduced they disappeared altogether. I certainly do not think it is anything to get overly woried about.
Ian
Thanks. I'll take note of that. I was hoping it was frayed fins that would go away too. They were zipping about for 2 days before they showed less activity and clamped fins and a few flashes - so I worry....
The little 'worms' on the caudal fins are gone. The cories are livelier, with no clamped fins.
However, one is still sluggish looking and I see the occasional spasms from another. I've also seen those (longer ~1cm) thin wriggling worms (not anchor worms for sure) in the water.
Keeping the 1ppt salt treatment and coppersafe for a few more days.
The outbreak of thin worms you see in the water were probably caused by overfeeding. Do a water change and cut back on feeding a bit and everything should be fine.
