dont know what happened, had a death today not sure why the others 3 are doing good his back fin was gone, dotn know if the others where beating on him or what but he didnt make it any ideas what happened...the tank has been up for 2 weeks cycling, has plants in it and water par is ph.7.2, ammonia 0ppm, nitrIte 0ppm, nitrAte 0ppm

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What happens if you get scared half to death, twice?

Angel fish aren't the best choice for cycling a tank. The angels are probably stressed and will pick on the weakest of them till they are down to 2 if they pair up.

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SUCCESS IS MEASURED BY YEARS, NOT MONTHS!!!
220 Tank build
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Are you sure the tank has finished cycling?
If not, then I agree with the above post that angels aren't a good choice for fish-cycling and unfortunately, there might be more die off until the tank becomes established. Either move the fish to another tank and finish the cycle without fish, or keep them in the tank and risk it.
If the tank has gone through it's initial cycle, then it's really more of a mystery unless the dead fish had been showing signs of distress/discoloration/odd behavior (all of which are pretty much linked). It's definitely possible that after it died the others could have been picking at it...i've seen this both at home at the stores

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55gal tank
2 Serpae Tetra
5 Pineapple Swordtail
1 Marigold Wag Swordtail
4 Peppered cories
4 False bandit cories
1 Oto
1 Bristlenose Pleco
3 Boesemani Rainbows
1 Western rainbow
2 angels

If you read his post and parameters, you will see the tank has only been up 2 weeks and cycling with fish. And you can tell by the readings it hasn't even started a good cycle yet.

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SUCCESS IS MEASURED BY YEARS, NOT MONTHS!!!
220 Tank build
http://www.aquariumforum.com/f15/sta...late-3253.html