What’s wrong with my fish?

[Jonishaq]

Have you tested your water?

Yes

If yes, what is your ammonia?

0

If yes, what is your nitrite?

0

If yes, what is your nitrate?

20

If I did not test my water...

1. ...I recognize that I will likely be asked to do a test, and that water tests are critical for solving freshwater health problems.

Do you do water changes?

Yes

What percentage of water do you change?

21-30%

How frequently do you change your water?

Every week

If I do not change my water...

1. ...I recognize that I will likely be recommended to do a water change, and water changes are critical for preventing future freshwater health problems.

I recently purchased a Gold arowana about a week a and he’s very responsive whenever I go near the tank and his appetite is really good.

But I’m wondering if this is an odd behavior for an arowana but everytime the lights are on he stays at the bottom of the tank and will go parking mode. But when the lights are off he swims normally.

my water parameters are fine 0 both ammonia and nitrite and 20 on nitrate.

i can’t almost enjoy him display his golden scales when he’s on parking mode everytime the lights are on.

any suggestions to improve his behavior?

 

[Deadeye]

Dim the lights and/or put some floating plants on top.
A lot of fish are sensitive to light and will hide if it’s bright. Also, if he’s a juvenile his main predator would be birds. When it’s bright out, a reflective fish with no cover or nowhere to hide is an easy target, and so he is hiding as best he can.