5 Rupees Pomacanthus semicirculatus

Part of Indonesia's 2016–2017 commemorative fauna series, which replaced the long-running working coinage with biodiversity-themed designs across multiple denominations. The semicircle angelfish, endemic to Indo-Pacific reef systems, was selected alongside other marine and terrestrial species as part of a broader governmental push tied to conservation awareness — not a standard currency replacement, but intended for general circulation nonetheless.