Hi Ned,
Do you ever see any of these on your lists? These are pretty much in my interest order.
Hyphessobrycon bentosi,
Hyphessobrycon pyrrhonotus,
Hyphessobrycon stegmanni,
Hyphessobrycon columbianus,
Hemigrammus ulreyi,
Brachychalcinus orbicularis,
Gymnocorymbus bondi
Thanks.