Aquarium on the upper floor, will the floor hold?

[duell]

I have just bought myself an aquarium of 540L (~650kg).

Thinking of placing it on the upper floor but got a bit worried due to the weight.
In the link below you can see the joist structure; the red "reglar" are load-bearing walls on the ground floor, and the green rectangles are the intended placements of the aquarium.
The joist structure consists of 220x45mm C24 with 2x22mm chipboard on top.

What do you think? Is there a risk that the aquarium might end up in the kitchen on the ground floor?

https://www.dropbox.com/s/ax483u0i7qlpyl5/Bjalklag.jpg

 

[sblixten]

Spontaneously, I would say it holds and if I do a quick estimation, it is just within the limit. If you place it on the right position, you should be safe... probably on the left one too. That's my guess.