New fish new tank

I would just suggest to ensure that the water is properly oxygenated. They look normal to me except for the swimming at the surface which usually suggests lack of oxygen.

The best way to oxygenate the water is with a protein skimmer. If no skimmer, then point another powerhead at the surface, agitate it much more to help with gas exchange.
 
I do have a skimmer in the tank. They will swim like this (very fast to and fro in one direction or circling the tank) at different water level, not just the surface. But I am concerned whether the swimming style is a sign of stress or it is only just playing around.
 
They may just see you go by and think oh it's feeding time even if they just ate.
 
Thank you for all commenting. Just to feedback on my fish, quite confirm the fish is just clowning coz till today (1 month++) she still have this behaviour.. lol besides that she is eating well and less nervous when I approach the tank. I think she is adapting well
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%
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