- The big-bellied seahorse gets its name from its swollen belly, which is very fat, especially the males.
- Reproduction takes place all year round. The couple wraps their tails around each other and the female lays her eggs in the male's pouch, where they get fertilized. The male carries the offspring.
- The big-bellied seahorses live in harbors and coastal areas in Australia and New Zealand and usually stay on coral reefs and seagrass beds in shallow water.
