Goldfish/shubunkin Disliking Tank Light

[crmpicco]

Hi,

My goldfish (5 yrs old) and shubunkin (3 months old) appear to be taking a dislike to the fluorescent tank lights. When I put them on within 1-5 seconds they are hiding underneath the filter together, similarly when I turn the light off they're out and swimming about like normal within seconds

They have gone through periods of this before, but I can't seem to understand what the problem is?

Has anyone else experienced this before? The light isn't flickering or anything so i'm at a loss as to why they behave this way.

Cheers,
Picco
twitter.com/crmpicco

 

[crmpicco]

Hi,

My goldfish (5 yrs old) and shubunkin (3 months old) appear to be taking a dislike to the fluorescent tank lights. When I put them on within 1-5 seconds they are hiding underneath the filter together, similarly when I turn the light off they're out and swimming about like normal within seconds

They have gone through periods of this before, but I can't seem to understand what the problem is?

Has anyone else experienced this before? The light isn't flickering or anything so i'm at a loss as to why they behave this way.

Cheers,
Picco
twitter.com/crmpicco

Just a few updates to this:

The tank is 70ltrs - Hagen Tropiquarium 68

The 5 year old goldie is a comet.

Very rarely do I see them come out when the light is on, certainly recently anyway. Although, when I turned the light off earlier they came out then ran back in

Do you think it could be related to the small drop in temperature at this time of year? The tank water seems to be down a couple of degrees. It's now around 14-15 degrees celsius.

 

[crmpicco]

Hi,

My goldfish (5 yrs old) and shubunkin (3 months old) appear to be taking a dislike to the fluorescent tank lights. When I put them on within 1-5 seconds they are hiding underneath the filter together, similarly when I turn the light off they're out and swimming about like normal within seconds

They have gone through periods of this before, but I can't seem to understand what the problem is?

Has anyone else experienced this before? The light isn't flickering or anything so i'm at a loss as to why they behave this way.

Cheers,
Picco
twitter.com/crmpicco

Just a few updates to this:

The tank is 70ltrs - Hagen Tropiquarium 68

The 5 year old goldie is a comet.

Very rarely do I see them come out when the light is on, certainly recently anyway. Although, when I turned the light off earlier they came out then ran back in

Do you think it could be related to the small drop in temperature at this time of year? The tank water seems to be down a couple of degrees. It's now around 14-15 degrees celsius.

I have an update to this situation if anyone is willing to help me out

He (my comet) does seem to be behaving quite strangely over the past few weeks, maybe even month now. For instance, I just done a 30% water change; added AquaSafe and a small touch of ammonia remover too. Once I had finished I put the tank light on and he was straight under the filter. I turned the tank light off and he came back out, swam around for 15-20 seconds and then went back under the filter. He has been there since and that was 10 minutes ago

Do you think something other than tank light is causing him to behave in this way? I have noticed little other change in him other than his two main gills at the side of his head (sorry don't know the real name) seem more "closed" than they used to be. Normally, when he would be swimming around they'd be opening and closing all the time but they look sort or sunken/collapsed. Is there a possibility this is a symptom of his behaviour recently?