Striders are passive mobs native to the Nether. They can walk/stride on lava and be saddled by the player. A warped fungus on a stick is needed to control a strider, similar to how a pig is controlled by a carrot on a stick.

Can you tame a strider in Minecraft?

You cannot tame them like other animals in Minecraft. Striders are pretty easy to find, and if you were to create a pen in the Nether, you can box them into an area and use them however you wish, especially when keeping one in a single location with a saddle.

What does a strider do in Minecraft?

The Strider serves as the Nether's very own ferry service. To get across huge bodies of lava, the player can effectively turn a wild Strider into a mount by using a similar method to riding a pig in the Overworld.