Hello All,
I've got a sick zebrafish. He's suddenly having trouble swimming (he twitches when he swims) is listless, and has pink around his gills, a red spot on his underside, and a white spot near his right front fin. It's possible those were there before and I didn't notice, and they're standing out now only because his movement patterns are so different. He hasn't eaten in about a day and spends all his time right up near the surface, just kind of floating there and twitching, though he will swim away if disturbed.
Background: I successfully rescued 3 fish from an abandoned apartment about a year ago. All three fish were doing fine up until yesterday. They're in a 30 gal tank. The other two fish (a Red Tail Black Shark and a Serpae Tetra) seem absolutely fine.
There is a stable population of snails in the tank (currently three) they've been there for about 10 months, along with some hornwort and duckweed.
Ammonia: undetectable
NO2 < .1
NO3 < 2.5
These levels have been more or less stable for a long time -- probably because the tank is large for the amount of fish. I do a 1/3 water change/vac every 2 weeks or so. Sometimes I get a little lazy and do a 50% change after a month.
The only thing that changed right before he got sick is that I made a temperature adjustment (because it seemed a little cool, I've since adjusted the heater back where it was) and the tank went from 77deg (which is where I normally keep it) to about 82deg. It's back down to about 80 now. I had just done a vac/water change the day before, though nothing out of the ordinary.
I've no idea how old these fish are, though The RTBS grew from about 3.5 inches to almost 5 in the first 6 months that I had him, though he was in a tiny 10 gal tank when I found him.
I'd appreciate any advice. I feel bad for the poor little guy.
Thanks in advance.
-Pir
I've got a sick zebrafish. He's suddenly having trouble swimming (he twitches when he swims) is listless, and has pink around his gills, a red spot on his underside, and a white spot near his right front fin. It's possible those were there before and I didn't notice, and they're standing out now only because his movement patterns are so different. He hasn't eaten in about a day and spends all his time right up near the surface, just kind of floating there and twitching, though he will swim away if disturbed.
Background: I successfully rescued 3 fish from an abandoned apartment about a year ago. All three fish were doing fine up until yesterday. They're in a 30 gal tank. The other two fish (a Red Tail Black Shark and a Serpae Tetra) seem absolutely fine.
There is a stable population of snails in the tank (currently three) they've been there for about 10 months, along with some hornwort and duckweed.
Ammonia: undetectable
NO2 < .1
NO3 < 2.5
These levels have been more or less stable for a long time -- probably because the tank is large for the amount of fish. I do a 1/3 water change/vac every 2 weeks or so. Sometimes I get a little lazy and do a 50% change after a month.
The only thing that changed right before he got sick is that I made a temperature adjustment (because it seemed a little cool, I've since adjusted the heater back where it was) and the tank went from 77deg (which is where I normally keep it) to about 82deg. It's back down to about 80 now. I had just done a vac/water change the day before, though nothing out of the ordinary.
I've no idea how old these fish are, though The RTBS grew from about 3.5 inches to almost 5 in the first 6 months that I had him, though he was in a tiny 10 gal tank when I found him.
I'd appreciate any advice. I feel bad for the poor little guy.
Thanks in advance.
-Pir
