Just thought we should have a section for each species of piranhas.
I'll start with Serralamus Rhombeus since that's all I have right now.
First is my first rhom at 4", second is my second one at 6.5" and the last two is my favorite one so far at 6".
Managed to get couple better shot of the black diamond last night in pitch black with moon light on and manual focus. in the second pic you can see the camera strap in the reflection, bad angle position.
anyway, you can see how he has this two-tone color above and below the lateral line, pretty unique. I haven't seen other rhom has something similar. (correct me if I'm wrong)
Yeah, nice rhom and that red gravel goes along pretty well with fish's eyes and do contrast with its body, however I do see the hith aswell it is a pity.