The first one looks like L129 but the 2 new ones look like L134. Hopefully they are L134, if not, those are some expensive L129. At least for what they go for here in the states. Not sure what where you’re located.
I was thinking the same thing -- the one in the tank looked like L129 and the ones in the bag looked like L134. I have L134 but I have never owned a L129. I do believe both require a similar diet / housing considerations.
Having seen the new photos in the tank I would agree that these are not L134, in fact are not Peckoltia due to the size of the eyes.
What is throwing me on saying yes to this being a male L129 however is firstly the white edge to the pectoral fins and secondly the fanned rear edge to the pectoral fins both of which make me think more L270.
But I am no great plec expert so still happy to be corrected.
You may only really know as they get older/ change colour or get bigger than 3”.