I immediately thought of this picture I took of a white sturgeon when I saw that this week’s photo challenge at Traveling at Wits End was Something that Doesn’t Belong.

In this photo, taken at the High Desert Museum, a young white sturgeon is surrounded by trout. It doesn’t quite fit in.

You might think this odd fish looks prehistoric and you’d be right. Sturgeon existed 200 million years ago, during the Jurassic period.

Though most sturgeon live 11-34 years, they have been known to live up to 104 years (!) They grow to an average length of 6.9 feet and sometimes grow to a length of 20 feet. The maximum weight recorded was 1,799 pounds. In fact, they are North America’s largest fish. So the fish in the picture may look small now, but it has a lot of growing to do!