Black piranha

[Neoinhd]

Hi guys new to this. My lfs sold me two piranha, they said they were black piranha and around three years old. They are very speckled and mottled and aren't really shaped like the typical rhombus I'm unsure as to whether they are actually black piranha. They do have red eyes. Also they have apparently been fine in a pair and all the info I've seen stresses they are solitary. I've attached a pic can anyone help me and let me know if they are in fact black rhoms

 

[Milingu]

They look like old Pygocentrus natteri.

 

[Neoinhd]

Someone just said piraya ??‍

 

[Somesed]

red belly for sure

 

[Deadeye]

Could be ternitzi. Look just like natts except without the red belly.

 

[The Masked Shadow]

Looks like this one. Not sure the species, just found it on the internet.

 

[Deadeye]

View attachment 1471295

Looks like this one. Not sure the species, just found it on the internet.

That’s a natt.
Full grown the adults lose the strong red colors in the belly. Most likely what the op has, terns aren’t too common these days.

 

[Neoinhd]

Think there piraya

 

[Deadeye]

How big? Piraya are bigger than reds.

 

[Neoinhd]

How big? Piraya are bigger than reds.

They're much bigger than any red I've seen