THe 13" one is off the table. I don't have an extra tank and don't tant to risk it. I'll talk to the guy he may be able to get me one around 8-9" whic would be perfect.
Researching online about Tigrinus having 2 of them together is not recommended as they would rip eachother apart similair to Arowanas. If u want more then one Tigrinus better to have a group together for less aggression to each other..