I bought 5 Chromis Damsels about two weeks ago, and put them in a 30g quarantine tank. One didn't look good in the bag (didn't notice this until after I got home). He looked pretty beat up... was all bent over and swam erratically. But the other 4 looked fine, ate fine, etc. Well, the beat up one died about a week after I got them and since then, I've lost two more. They both acted the same way before dying. First, they go hide in one of the rocks, breathing rapidly. Then they come out, thrashing about, swimming erratically... it's almost like they're going into convulsions. The next morning I find them dead on the bottom. The first one looked like it had "bruises" on his body, this last one looked perfectly fine even after he had died. Other than that, no external visible signs of any disease. The remaining 2 chromis are acting fine, looking fine, eating, etc.
I've checked my water parameters repeatedly, as my first thought was "ammonia poisoning". Always have 0 nitrite & ammonia, pH is 8.1 - 8.2. I've got air running to a powerhead to ensure there is enough dissolved oxygen in the tank. TDS Meter reads 0 on my RODI water. I've read that these symptoms could indicate internal parasites, flukes, even cyanide poisoning. Any thoughts?
I've checked my water parameters repeatedly, as my first thought was "ammonia poisoning". Always have 0 nitrite & ammonia, pH is 8.1 - 8.2. I've got air running to a powerhead to ensure there is enough dissolved oxygen in the tank. TDS Meter reads 0 on my RODI water. I've read that these symptoms could indicate internal parasites, flukes, even cyanide poisoning. Any thoughts?
