Picky

In spring, Atlantic Sturgeons swim up the river from the sea. In the freshwater of the river where they themselves were born, the females lay their eggs. They only lay eggs when the temperature, current and acidity of the water are just right. If this is not right, they skip a year and do not lay eggs.

Hoover

The Atlantic Sturgeon has no teeth. It can extend its mouth like a trunk. It uses this to suck up small aquatic animals from the bottom. It has four feelers near its mouth with which it can feel if there is something hidden in the sand. If it feels something, it sucks it in like a hoover.