I've never heard of a yellow fin chalceus.
I have a pink tailed chalceus, looks identical although the entire caudal fin on mine is totally pink/purple. Where as yours looks lower half same colour as mine, but upper caudal fin is clear? Is yours a variation of [FONT=arial,sans-serif][SIZE=-1] macrolepidotus? or different sp?
[/SIZE][/FONT]