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Look at fins, they are like eaten and yellowish stuff on them.
I've lost almost all my cories.

Sorry to hear that, and I'm unable to say why your fish died from the picture alone - it looks like you have also lost several other fish - is that a Bosemans rainbow?

First thing to check would be the ammonia and nitrite levels in the tank, I'd say.

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Mats

MatsP wrote:Sorry to hear that, and I'm unable to say why your fish died from the picture alone - it looks like you have also lost several other fish - is that a Bosemans rainbow?

First thing to check would be the ammonia and nitrite levels in the tank, I'd say.

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Mats

I've lost in this tank 3 cardinal tetras, 6 endler guppies, 2 L66, 10 green stripe cory, 5 orange stripe cory, 2 Bosemani and 4 blue eye
L66 had a lot of blood on the body before dye.


Did big water change last evening, today lost half of them. Checked ammonia - 0.

Sounds like you have something horribly wrong in your tank - if ammonia isn't the cause, then I'd say you either have parasites of some sort or a bacterial illness in the fish.

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Mats