| 1 | The baiji dolphin, the ancient river sturgeon and the finless porpoise depend on the Yangtze fortheir survival. | |
| 2 | The Caspian holds a great amount of sturgeon, which yield eggs that are processed into caviar. | |
| 3 | Itnever did, and there are no Alabama sturgeons in captivity. | |
| 4 | Some ray-finned fish, including paddlefish and sturgeon, also retained these receptors. | |
| 5 | "Humans can have an effect very quickly and very easily on the sturgeon population, " Hale said. |