This is a 6 1/2 gallon "long" acrylic bowfront - The type sold as a combo at PetCo. Way awesome tank. It's basically a miniature SHOW tank. Easily my favorite tank.
It houses my baby 'cuda and 4 cory cats and some snails. At 2 feet long, this little guy can cruise all he wants at his baby stage. Anybody else have one of these tanks? They are the best!
I see what you mean now - sorry. In the aquarium trade, when one says "long" they know it means a long version of THAT size tank.
Example: 20 gallon long - no comma. Same for my tank. 6 1/2 gallon long. (meaning, as opposed to a standard length 20 gallon)