Three-spot Seahorse
Hippocampus trimaculatus
- Vulnerable
- Card rarity: Rare
- Fish

The flat-faced seahorse, longnose seahorse, low-crowned seahorse or three-spot seahorse is a species of fish in the family Syngnathidae. It is found in Australia, Cocos (Keeling) Islands, French Polynesia, China, India, Indonesia, Japan, the Philippines, Singapore, Taiwan, Thailand, and Vietnam. Its natural habitat is shallow seas. It is threatened by habitat loss.
Classification
- Class
- Actinopterygii
- Order
- Syngnathiformes
- Family
- Syngnathidae
- Genus
- Hippocampus