Can any stingray expert shine some light for me?

Hello all, I have been looking up and researching about stingrays for the last little while.

I recently procured a 90g tank (was told it was 100g, then found out afterwards it was only a 90g, measurements 48' x 18' x 24').

Anyways, I haven't even started setting it up for anything yet, I want to be sure before I do.

Once everything is set up and ready, would I be able to house a reticulated stingray in it until I could upgrade my tank to a larger version? I have my eyes on a 185g+ tank in about a year or so. Would the stingray be ok in this size until then? Currently, it is only about 3-4 inches in diameter. The fish store nearby has had it for approx. 2 months, and it seems healthy so far, swimming and eating and such.

Would it be too harsh on the ray to have to move it to an upgrade down the line, or would the not be a huge problem?

Any help, advice or tips would be appreciated. I was pretty disappointed to find out that the tank might not be big enough for even a baby reticulated.

Thanks guys!

Thanks for the advice.

The thought at the moment is that I don't have that much extra money to afford a larger tank at present after buying all of the equipment like the wetdry, heaters, and all. Hard to drop that much money as a brand new home owner/student. I'm in my last semester of college before I enter the work force in 2 months time, where I can be making enough for an upgrade.

Sorry for the double post, I also wanted to ask; Is it best to keep the stingray to itself, or add other fish in with it? Obviously not ones that are aggressive or small enough to be munched on. What types of fish, if any, would you guys recommend? Remember, the tank at present is 48'x18'x24'.

Thanks!