HELP: Over flaring?!

[Hinamikun]

Hi! I just got a new Betta fish 2 days ago, and since yesterday, Bernard (my fish) has been flaring at his own reflection on the glass and the top of the water. He also swims quickly against the glass. He's eating normally and looks forward to food(he eats actually quite fast)...Bernard swallows a pellet in 5 seconds AT MOST. However, when I put my finger against the glass, he swims away...I'm worried he will get stressed out or hurt himself as he does this for extended periods of time. I tried turning off the aquarium light and the room light, but Bernard continues to flare (there's still some reflection/shadow).

Betta fish: Royal blue crown-tail
Tank: 2.5 gallons (filter and heater)
Temperature: 79 degrees Fahrenheit
Brought home: Tuesday, September 6th
There is a hiding place and plants for Bernard.

I'm not sure if this is normal or not, since this is my first time owning a Betta fish or any other kind of fish at all!

[Myates]

Try putting something against that side to see if it will discourage him (inside like a plant, or outside like a piece of paper or book). Otherwise, they do that if they can see "another betta". In time he should settle down though on his own once he gets used to seeing his reflection. They normally don't hurt themselves doing it, but once in a while he may tear a fin, but those grow back together pretty quickly.

[Hinamikun]

Thank you so much!
I will try to move the plant to the side. Hopefully with time, Bernard will realize it is his own reflection! (:

[Myates]

If it doesn't work, don't give up or worry too much. They tend to settle down, even in divided tanks, after a bit they realize it's a lost cause and go about their own business.
Also, daily flaring exercises are actually good for them. Helps build up strength, especially after moving from a tiny cup to a larger home =)

[missm83]

My boy did that for about a week in his 1st tank...but now hes over it i guess...hehe the only time he will flare up is when i come up to the tank..i guess hes showing of