Any idea from where or what kind of rhombus?Looks like a rhombeus.
At this size I thought it would have a red eye? I thought it may have been a black diamond, but not sure. I think you're right, a Serrasalmus Rhombeus. Thank you!Gold Diamond or black Piranha. Serrasalmus Rhombeus maybe!
That's another name for the gold pirhana?Yellow makes me think Gibbus
Yeah, I had read this article earlier. I wonder are they common in the trade. I didn't see this clasification in this forum yet. Here's another article I had looked at Gold piranhaHere is a link from opefe. Looks similar to a Gibbus I got from Below Water years ago.