Who are seahorses common ancestors?

Seahorses belong to the family Syngnathidae, which also includes pipefishes and sea dragons. All of these species share a common ancestor with sticklebacks, which are small, spiny fish found in both marine and freshwater environments. Sticklebacks are believed to have evolved around 30 million years ago, and their descendants eventually gave rise to the various species of seahorses, pipefishes, and sea dragons that are known today.