September 21, 2015
I had 5 orangespotted sunfish(Lepomis humilis) with red shiners(Cyprinella lutrensis) in a 40g tank, I found red shiner got ich last month so I used some ich medicine from local fish store, which mainly contains malachite green and formalin, the dosage is according to instruction on the bottle. I dosed the tank for 5 days, the ich was gone but Ospots were sick. They seem dull and inactive, stayed at bottom, body blackened, not eating...
I think they are poisoned by the medicine(seems sunfish is extremely vulnerable to medicine, the shrimps and catfish are fine) so I changed 1/2 water and kept observing. After 2 weeks, their body color is normal now, and they start to eat some bloodworms and brine shrimps that I drop around them, once they touch them. But they have difficulty locating the food, it takes several tries to get the food and they are still very inactive.
I don't know if the medicine damaged their nerve system? Can they recover?
I took the pic below today, it shows the one of the sunfish, it stayed at the bottom and hardly swim
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