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It's an iniridae-group species, so for sure not elizabethae. If it's a male, there are not many species in this group with a rounded caudal fin, to my knowledge merely A. iniridae, A. sp. D51 and A. sp. Z12. Do you know the catch location? Did it come with elizabethae?
It's a macmasteri-complex species, but which one is impossible to tell from the picture. If it's tank bred from a reputable breeder, I would trust the ID. If it's wild caught the catch location would be very helpful.
Often, but not always, gephyra have a less spade-shaped caudal. For me the most easy way to distinguish them from agassizii is by means of the caudal pattern: gephyra have a narrower submarginal band and inside it a lace-like pattern often, but again not always, restricted to the upper half.
They are A. panduro (A. sp. Pandurini is merely one of their former common names) and the male is a male. I'm not sure about the sex of the "female" though.
A. sp. Kelleri, A. sp. Leticia etc. are merely names that have been used for A. megastoma before it eventually got it's scientific name. That's the reason why they are listed in the column named "Other Names".
It's for sure not A. baenschi or A. panduro. In the first picture I see a dark patch in the lower rear part of the dorsal fin which is typical for A. (cf.) norberti.
In addition, in the second picture I believe to see a very faint lateral spot that expands above the lateral band. If so, this...