There's been a lot of interest in this fish lately. I used to have one. I bought it in 2016 as a "pink tailed Chalceus". At the time I had no idea there were more Chalceus in the family. It wasn't until much later that I discovered there were more.
There are currently five known Chalceus.
1. C Epakros.
2. C Erythrurus (tucan fish).
3. C Guaporensis.
4. C Spilogyros.
5. C Macrolepidotus (common pink tailed Chalceus).
It seems that the most common one in the hobby, which is indeed sold as the pink tailed Chalceus, the Macrolepidotus, has some competition lol, which are muddying the waters.
My pink tailed Chalceus grew into a definite C. Erythrurus (the tucan fish). The only ones I've seen in the hobby are the Erythrurus and the Macrolepidotus, until I saw
tiger15
picture. That one, as you can see from the ref picture I posted is undoubtedly the C Epakros.
You may have a rarity there tiger15, I don't know. All I can say about
Backfromthedead
Chalceus is that it has no red blotches, so probably not C Epakros, and to me it doesn't look like the C Erythrurus either. Maybe C Macrolepidotus, the true pink tailed Chalceus???
If not, then you could possibly have one of the other two, the Spilogyros or the Guaporensis.
It's all very interesting that's for sure, lol.