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Recent content by Crash4hope
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She has dropsy. The scales poking outwards give it away. You'll want to separate her into a hospital tank and start a salt treatment with more frequent water changes until she's better. If the salt doesn't work you'll need to try an antibiotic, Maracyn-two is supposed to work.
Sounds like the betta is killing them. I tried putting neons in with one of my bettas and it did not go well. At first I tried adding 3 neons in with Chartreuse, the betta, which seemed fine. He never even chase them. So since neons like schools I bought 4 more. The day I put them in 1 went...