i personaly would keep an aro in with any kind of turtle. aros need super clean water just by having a turtle in there will make that more difficult. you wopuld need super filtration on the tank you even make it work. and i would not want to risk an aro in with a turtle. if the mata mata decides he is hungry that will be one very expensive meal haha.
you can do what you want but i wouldnt mix stuff like that. by nature turtles eat fish, so i just wouldnt mix very expensive fish in with the mata mata. keep the turtle and the fish seperate and they will both be better off.
you can do what you want but i wouldnt mix stuff like that. by nature turtles eat fish, so i just wouldnt mix very expensive fish in with the mata mata. keep the turtle and the fish seperate and they will both be better off.