1.The first is a very bright lime with dark fins.
2.The next is dramatic yellow together with orange splotches.A corner fins are outlined with black.
A FEW.The 3rd is light grey/clear with bottom plus darker number one.It carries a pointy fin top most and your pink to come back fin.That one is the actual tetra.But I need ideas of what form.The additional two said something, numerous.
1-2) There are some options, but My organization is guessing Platy:
3) Yet again several choices, but quite possibly a red/blue columbian tetra:
those appear to be very lovely fish.