Question
tetra
Hi there,
I've wanted to ask this question for some time now as I never seem to be able to find the answer. I have an 140 L tank, with community fish in it. Currently the temperature is about 29 degrees C (84 F) which I know is high, but it's getting on to summer here and there's not much I can do about that. The problem is our neon tetras. Almost all of them seem to have a hite growth on or around their heads. One particularly bad one has it completely covering his eye (I have pulled him out of the tank tonight to euthanase, as he was definitely close to dying anyway, not able to swim properly, etc). Others seem to have it attached to their mouths. They seem to be able to feed alright with it there, as most of them have had it for a while now. They also appear to have slight discolouration, and whitish bits around their fins, mostly their tail. We started off with 10 tetras a couple of months ago, and have 4 that I can see now in the tank (2 were taken out tonight). None of the other fish seem to be sick, we have guppies, platys, bristlenose catfish, as well as rummy nosed tetra and blue stripe tetra (I'm not sure if that is their real name or not). Although, while writing this I have just noticed that one of the blue stripe tetras has what appears to be mouth rot, so I will be treating the tank tonight (tri-sulfa tablets, sulfadiazine, sulfadimadine, sulfamerazine)
We have taken sick fish into our local aquarium store, and they told us it was a fungal disease. We were given medication to help, but it didn't solve the problem. (brand name fungus cure, active ingredients acriflavine and malachite green). The lumps didn't go away, although up until now the fish have seemed ok.
Sorry if this is too much info, I just wanted to be thorough in my question. I have also just checked the pH, and it is very low (my testing kit only shows colours for down to 6.2, and it is very far away from that colour). This may be why the fish have suddenly died, but I would like your opinion before I do much.
Sorry, one more thing. I just examined the dead fish, and the growths appeared to be hard and bony, not soft as I imagined they would be. I had thought that if it were a fungus, the result would be soft. Please let me know what on earth this is, if you know.
Thanks in advance,
Bec Nuske
AnswerHi Bec,
That is a puzzler. Like you I would have assumed that it would be soft and therefore was a fungus. So frankly I have no idea. I have not seen that before. Sorry.
BTW, I do not think the pH is a problem, particularly for tetras.
The Amazon, where many tetras come from, has VERY low pH.
-- Ron C.
rcoleman@cichlidresearch.com
Cichlid Research Home Page <http://cichlidresearch.com>
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