5 Rupees Carassius auratus

The denomination here is almost certainly a catalog error — Indonesia issues rupiah, not rupees, and has done so since 1949. The species name Carassius auratus is the common goldfish, featured as part of Indonesia's long-running wildlife conservation coin program. That program has documented dozens of endemic and threatened species across its issues since the 1970s, though the goldfish itself is not endemic to Indonesia and its inclusion in a conservation series is an oddity worth noting.