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
