Telling the difference between reptile and fish tank

[iMax]

Is there a way to tell the difference between a reptile and fish tank?
I picked this tank up for free, and it used to hold fish, I just don't want to make the investment and have everything shatter on me one day.


Dimensions are 30 1/4 inches long , 12 1/4 inches wide, and 12 1/4 inches high, if that helps

 

[Chiroptera]

Look at the sealant on the sides. In a fish tank it will be VERY slim, just fitting in the panes, and very uniform. Terrariums generally are a little more messy. Not the main factor, but I've had a few of both.

Also, is it a regular top? If it looks like something was meant to slide in the top, like a screen, it's almost definitely not a fish tank.

 

[iMax]

The sealant looks pretty uniform, and the top looks like a standard fish tank one with the lips to hold a hood, but I haven't owned a fish tank in years


EDIT: added more pictures to the main post of sealant and top

 

[Chiroptera]

20 gallon long fish tanks have a standard size of 30x12x12 inches. It could be that.

 

[iMax]

When doing measurements is it from the black tips or where the glass starts? if its where the glass starts then your measurements would be correct

 

[Chiroptera]

Glass. The trim doesn't have much to do with how many gallons are in it.

I'd suggest going to your local pet store and asking them, or if you don't know of any/can't go out with the tank with you, I'd put water in it and keep it on a porch or in a easy to clean place for a few days to see if it holds. Then, if it does, keep it in a room where damages won't be too severe if something were to happen. From what you say it sounds like a fish tank, but I would try to get a pet store agent to look at it first.