Help With identification of Orinoco Apisto

[Darren K]

Hey everyone, I recently came into position of 5 apistos. This is my first time owning an apisto but I have a dwarf pike (I think a regani) and GBRs.
They are wild caught and label as orinoco apistos. There looks to be two distinct fish.
I can take more photos if needed.
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On a side note, I have currently been feeding them a mix of frozen brine shrimp and blood worms and occasionally freeze dried tubifex, is this ok or should I be feeding something else?
And will wild caught apistos ever take pellets?

Thanks!

 

[Frank Hättich]

First and second picture are male A. sp. Kiemenfleck/Gill-spot (D37). The female in the third picture is a different species, imo A. sp. Alto Vaupes II (D50).

 

[Darren K]

First and second picture are male A. sp. Kiemenfleck/Gill-spot (D37). The female in the third picture is a different species, imo A. sp. Alto Vaupes II (D50).

Thanks a lot!