cherry barbs black eye

[dizzy1968]

Hi All

A couple of nights ago I noticed my male cherry barb swimming frantically all around the tank then landed on a leaf and sat there breathing heavy, I went over to look at him and noticed his eyes looked a little bulging, but doesn't look like pop eye? he has done this frantic swimming a few times since and then noticed that 1 of his eyes have gone black, could it be an illness or has he banged it, poor little thing. water test done all perfect.

can anyone help

[HUKIT]

I've seen fish with black eyes in the beginning stage of popeye or severely stressed. I'd add Epsom salts dosed at 1 tablespoon per 5 gallons and perform a series of daily water changes for a few days(replace the Epsom salt you've removed during the water changes).