Yes, you can eat swordfish skin. However, there’s a lot that you are supposed to know about the same. In order to determine if swordfish skin is safe for consumption, it is important to answer several different questions. The first concerns why fish have scales in the first place. Fish scales serve a dual purpose: they reduce friction when a fish passes through water and also protect the fish from predators above water by providing a slippery surface that makes it difficult for other fish to get a firm grasp.

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Fish scales are made up of the same kinds of tissue that make up human fingernails, bird claws, or reptile scales. There are three main types of fish scale: cycloid, ctenoid, and ganoid scale. Ganoids are considered one of the most primitive types of fish scales while cycloids are considered to have evolved relatively recently.

Ctenoid scales are the most advanced type of fish scale, which is why they are found on the skin of most modern species of fish, including swordfish. These scales contain a central axis with teeth-like projections known as barbs. They closely resemble the typical image of what you think of when you picture a fish scale. Ctenoid scales are most closely associated with ray-finned fishes, which include most species of bony fish.

Cycloid and ganoid scales do not have barbs and their central axes tend to be smoother in appearance. Both types of scales can also be found on the skin of modern fish.

In conclusion, swordfish skin is safe to eat. However, there are some precautions that you should take when preparing it for consumption. In particular, you need to make sure that the scales have been properly removed from the fish before you cook it. Failure to take this step may expose you to unsafe levels of mercury.

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