Yellow Tang Blind Suddenly..Any Ideas Please?
- Thread starter Robbo
- Start date
- Tagged users None
Interesting topic, I hope all goes well for the yellow. Just wanted to share my observation a year ago, my yellow was acting like he has myopia. Was clearly missing the certain sized flake particles at certain distances, ie, was able to track big ones, and smaller ones only if they are close enough. Others were able to catch food stuff under his nose . He never had problems with bigger objects (a hand over tank or me around tank). All these let me think that he had some vision problems but currently he is doing better and vision related issues appears gone (should say, mostly. Sometimes but rarely, he still missing food while blue tang sense it and strike like a sidewinder missile from the other side of the tank 
).
Appears these guys may have issues on visual perception.
).Appears these guys may have issues on visual perception.
In a human there can be a delayed reaction and there would also be physical evidence of a subconjunctival hemorrhage, but I'm not certain about with a fish. A subconjunctival hemorrhage can take a few weeks to completely clear up so let's see if his eyesight returns in time. To be clear, I'm actually thinking something along the lines of a subconjunctival hemorrhage might have occurred. Osmoregulation affects so many things inside a fish's body that it can be hard to pin down exactly what was impacted when osmotic shock occurs.
OP
OP
Robbo
Community Member
Thanks for the concern, tried releasing into DT and reacted a little better but still seems blind, so re caught and placed back in isolation. Have tried feeding with various food but does not react at all and just swims in circles. No food for 3 days now. I will try releasing tonight and see how he goes this time.
OP
OP
Robbo
Community Member
Thanks, appreciate the insight and experience.Interesting topic, I hope all goes well for the yellow. Just wanted to share my observation a year ago, my yellow was acting like he has myopia. Was clearly missing the certain sized flake particles at certain distances, ie, was able to track big ones, and smaller ones only if they are close enough. Others were able to catch food stuff under his nose . He never had problems with bigger objects (a hand over tank or me around tank). All these let me think that he had some vision problems but currently he is doing better and vision related issues appears gone (should say, mostly. Sometimes but rarely, he still missing food while blue tang sense it and strike like a sidewinder missile from the other side of the tank
Appears these guys may have issues on visual perception.
OP
OP
Robbo
Community Member
Thanks Humblefish, I do think this is the most plausible cause. He is slowly getting better I think, but not eating or reacting to food within such a small box. Not sure how long he can last like this though.In a human there can be a delayed reaction and there would also be physical evidence of a subconjunctival hemorrhage, but I'm not certain about with a fish. A subconjunctival hemorrhage can take a few weeks to completely clear up so let's see if his eyesight returns in time. To be clear, I'm actually thinking something along the lines of a subconjunctival hemorrhage might have occurred. Osmoregulation affects so many things inside a fish's body that it can be hard to pin down exactly what was impacted when osmotic shock occurs.
OP
OP
Robbo
Community Member
Thank you
SNAKEMANVET
Well-Known Member
I had a yellow go blind when I was finishing hypo treatment.I raised my sg to fast by mistake and it was blind by the next morning.It was laying down by the edge of the liverock and would not move.
OP
OP
Robbo
Community Member
Thanks, what were your next steps and did the YT recover please?
OP
OP
Robbo
Community Member
I actually think the fish has had a stroke. I do think he can see but doesnt know how to react but learning all over again. Feeding with Nori to start in isolation box is a difficult task as its like training a baby. He is finally catching on I think.
OP
OP
Robbo
Community Member
Definitely can see now, eating small amount of Nori now, maybe 1 or 2 small bites at a time. Tried him back in DT but other YT very aggressive and constantly attacking him. Definitely was harder to catch to place back in isolation for purely protection, so symptoms subsiding. Trick now is to get the other YT to accept him again. They were fine before. Keep you posted
OP
OP
Robbo
Community Member
YT now back in DT and is eating after being in isolation box all this time, looking so much better. I literally had to hold him to eat
and teach him how to. My best guess is he did have a stroke due to osmotic shock.
Problem was when i returned him to DT the other healthy YT was so aggressive. I finally caught the aggressive tang and placed him in a quarantine tank i set up with live rock and biological media and water from main DT. I will keep aggressive tang in quarantine for a few days to a week with careful monitoring of conditions as its new. I am trying to avoid it cycling with dosing of bacteria and adding sea Chem safe every day. 56 ltr Quarantine had been set up for 2 days with a chromis. I will do water changes in quarantine every 2 to 3 days.
and teach him how to. My best guess is he did have a stroke due to osmotic shock.
Problem was when i returned him to DT the other healthy YT was so aggressive. I finally caught the aggressive tang and placed him in a quarantine tank i set up with live rock and biological media and water from main DT. I will keep aggressive tang in quarantine for a few days to a week with careful monitoring of conditions as its new. I am trying to avoid it cycling with dosing of bacteria and adding sea Chem safe every day. 56 ltr Quarantine had been set up for 2 days with a chromis. I will do water changes in quarantine every 2 to 3 days.
