From reading a small number of database and journals I hypothesize that this may be the Myanmar native sperata acicularis which appear to sport slightly larger eyes and taller shoulders than sperata aor which can be found throughout india, bangladesh, Pakistan, Nepal and upper Mayanmar. Unfortunately a complete hypothesis since getting accurate location info on youngsters is difficult at the best of times and finding good catalogue and journal Information on locations and pictures is even harder.
I would say yours are sperata aor victor, less pronounced shoulders even at 2.5'
I would say yours are sperata aor victor, less pronounced shoulders even at 2.5'