I have the emperor's no problem with NQ Algae Shrimp, which like Amano's don't breed well in fresh water. They are quite aggressive against each other but nothing life threatening. This will also chase my ember tetras but again not serious.Tropco were selling tank bred Green Neons. Lovely fish but quite skittish. Dwarf Pencils are always out and about, very calm and so far mine haven't jumped! Purple Emperor Tetras may be worth a look. They are always foraging, fearless and have lots of 'personality'. They are not, however, shrimp safe.
TA Aquaculture have some lovely rare micro Tetras in stock. They weren't able to deliver for me because of problems with APC (their courier). They may have resolved these problems now.
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