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What is this white lumpy thing on my tetras head??
There are uncountable of cases alike. It doesn't seem to be treatable which points me towards a viral disease (like lymphocystis).
Is it contagious or fatal?
Don't know for sure. Experiences show there are always some in a shoal that have them and some don't. It doesn't seem ot be lethal though if they'll start having difficulty to eat there is a problem.
Ok thank you
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