After doing a little more research, I think you are correct. It must be a macrobrachium shrimp. Somehow it must have gotten mixed up with the amanos.
Sounds like it could have been a macrobrachium shrimp. They are predatory and will take whatever they can grab. Some species can get to over 12 inches
What corner are you going to be in, evil. You sure don't expect to be a referee. There really is nothing to fight about. If you want an awesome pet, don't
Sorry for late reply,but yes I still have them. Send me a pm if you are still interested.
Was entertaining reading tho