They were sold as silver dollars and were to small to even plan on trying to ID them but now at 4-5 inches I’d like to know , not that it really makes a difference as all 5 are the same .
I was firstly leaning towards Metynnis argenteus now swayed towards Metynnis hypsauchen an almost identical fish but then the way these have grown in a month is making me paranoid that I have 5 myloplus rubripinnis (red hook) and there just too young to have the elongated anal fin I’m hoping not to be honest