New 240 gallon tank stocking help

[M@T!@$]

So I just picked up an acrylic tank (240 gallons) for one of the best deals I have ever seen.

Wondering what should I stock it with? It is at the widest parts 32 inches in diameter, so I was thinking of putting a ray in.. Any suggestions?

 

[Ihsnshaik]

That is an unusual tank. It's way taller than it should be for a ray tank. It's not long should be at least 6 feet. You can keep "teacups" though

 

[M@T!@$]

That is an unusual tank. It's way taller than it should be for a ray tank. It's not long should be at least 6 feet. You can keep "teacups" though

Yeah it is a custom, it's 5.5 feet long, just wanted to see opinions hystrix rays are something I am interested in also