Suddenly lost a Cory- ideas why?

[emerald76]

Hi,
I purchased six Pygmy cories Saturday evening, acclimated them to my ten, and out them in. They were eating this morning but now one has suddenly become lethargic and died. The tank is at 72 with 0, 0, ~10 params. Tank mates are guppy fry and some RCS. The tank is gravel with a large rock and some plastic plants the cories like to sleep on, along with a sponge filter and a small bubbler. This Cory was a bit smaller and colors a bit paler from the beginning but seemed okay. All other cories are swimming and eating well. Please help me- is it just stress or some disease? I don't want to lose all my cories!


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[Brookster123]

Sometimes the pygmy corys just don't make it. I've lost entire groups (purchased at the same time) my original troop of 6 lost one and the remaining 5 are still going strong! Almost 2 years later.

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[emerald76]

It's unfortunate, especially because according to my LFS it's the only time they plan on stocking them and they were only $2.98. But I do love the little buggers.


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[dcutl002]

Probably sick when you purchased it. I hope the others do Okay.

 

[jlbfish]

I always had bad luck with Pygmy Cories they died off super fast. Here we have really hard water so I used driftwood and RODI water for my tank and it didn't help.

Took the last 2 back to the fish store.