Do trout have a back bone?

Yes, trout have a backbone. All bony fish have a backbone, which is a segmented, flexible column that runs along the back of the fish. The backbone provides structural support and protection for the fish's body, and it also allows for movement. In trout, the backbone is made up of a series of vertebrae that are connected by ligaments and muscles. The vertebrae are hollow and filled with a soft, gelatinous substance called marrow. The backbone is also an important site for blood vessel and nerve distribution, and it provides a point of attachment for the fish's fins.