confused_aquarist
Fish Fanatic
I almost feel ashamed because I've had so many diseases going on in my fish tanks, but I'm still curious to know what's the issue.
Lately I've seen red dots on (in??) lampeye fry and younger juveniles and I'm mystified as to what they are.
They are in a 90L tank, it has 5 adults and 18 fry, and usually each fry with the disease has only 1 dot, pin-sized.
Sometimes its under the skin, sometimes it's on the skin either sitting on it or protruding out, sometimes it's on the gill area, sometimes it's inside the brain (and when it's inside the brain, they have fast respiration rate).
I've had maybe 8 or 9 of the fry affected with it.
Only 1/8 from my initial batch had it. Most out of the 10 fry from the 2nd batch has had it.
(The fry are transparent, so it's very easy to observe them but I feel that the dots could also be in the adults just that I can't see them.)
I am growing the fry in 2L breeder boxes connected to the main tank. The dots also appear after I transfer the fry to the main tank.
Usually, the dot goes away within a week. I haven't lost any fish to it yet.
The main tank has no ammonia, a good amount of water flow and a lot of filtration. Plants are growing fine and there is no algae.
It seems to be related to biofilms, because when I wipe away the biofilms the red dots seem to go away faster.
Edit: Also I don't know if this info would be helpful but the recovery is always gradual, happening slowly within 2 or 3 days. So it probably couldn't be one sudden rupture or 1 worm, for example. It looks more like a capillary rupture more than anything else. I haven't seen any of them flash even when the dot is outside.
Lately I've seen red dots on (in??) lampeye fry and younger juveniles and I'm mystified as to what they are.
They are in a 90L tank, it has 5 adults and 18 fry, and usually each fry with the disease has only 1 dot, pin-sized.
Sometimes its under the skin, sometimes it's on the skin either sitting on it or protruding out, sometimes it's on the gill area, sometimes it's inside the brain (and when it's inside the brain, they have fast respiration rate).
I've had maybe 8 or 9 of the fry affected with it.
Only 1/8 from my initial batch had it. Most out of the 10 fry from the 2nd batch has had it.
(The fry are transparent, so it's very easy to observe them but I feel that the dots could also be in the adults just that I can't see them.)
I am growing the fry in 2L breeder boxes connected to the main tank. The dots also appear after I transfer the fry to the main tank.
Usually, the dot goes away within a week. I haven't lost any fish to it yet.
The main tank has no ammonia, a good amount of water flow and a lot of filtration. Plants are growing fine and there is no algae.
It seems to be related to biofilms, because when I wipe away the biofilms the red dots seem to go away faster.
Edit: Also I don't know if this info would be helpful but the recovery is always gradual, happening slowly within 2 or 3 days. So it probably couldn't be one sudden rupture or 1 worm, for example. It looks more like a capillary rupture more than anything else. I haven't seen any of them flash even when the dot is outside.
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