No Mohican it isn't! I have a 37g and a 5g and it's the same length and height as my 37g.
They seem fine to me ATM but I've been there for 1.5 years and they've been there since the day I started ( and I know they weren't that big then bc I didn't notice them)
The residents love the tank- they're always sitting by it and talking about the 2 big fish lol
I'll have to mention it to the person who cares for the tank.