Mercy's Garden Eel
Heteroconger mercyae
- Least concern
- Card rarity: Common
- Fish

Heteroconger mercyae, or Mercy's garden eel, is an eel in the family Congridae. It was described by Gerald R. Allen and Mark van Nydeck Erdmann in 2009. It is a marine, tropical eel which is known from the western Pacific Ocean, including the Philippines, Indonesia, and possibly New Britain. It is known to dwell at a depth of 4 to 10 m, and inhabit sediments of silt-like sand. Males can reach a maximum total length of 67.8 cm (26.7 in).
Classification
- Class
- Actinopterygii
- Order
- Anguilliformes
- Family
- Congridae
- Genus
- Heteroconger