Flowerhorn jumping

[adnan]

Hi MFK!
That's my pet, bit older than a year, I could say 11 inches big, everything so far so good ......except he likes jumping, especially when I approach him, probably waiting for his food. The problem is that when he jumps quite often he hurts his head. I know that I can't do nothing to deal this problem, that's his nature, just my question is- is that behaviour normal for Flowerhorns or mine is getting psycho?
That's him with broken head.



And an extra picture- full body size.

 

[Deserthead]

I have a 3" flowerhorn that does that I thought he might be jumping at the condensation dripping from the lid

 

[Dainbramage]

Lower the water level or use plastic air line tubing to cover the sharp edges inside the lid. Split the tubing and slide it on

 

[BIG-G]

I had one a few years back and yeah he jumped a lot. About all you can do is make the lid as tight fitting and safe as you can. Like Dainbramage suggested cover all the sharp edges.

 

[adnan]

Thanks guys! Appreciate all your suggestions!
He jumps a lot, especially when I miss to feed him. Plus recently it's getting harder to clean the tank- before during vacuuming the gravel he was attacking the vacuuming hose, but since a month he wants to bite my hand, not the hose. Intelligent fish, protecting his territory.