Fish are a major fauna type, as well as one of the main food sources found in Stranded Deep. They can be found anywhere in the ocean, from the shallows to the very depths.

All fish vary in size and shape, with those in the open ocean generally surpassing their shallow reef neighbors in both regards. Open-sea fish are much rarer, but always provide more food. Shallow fish can be found in abundance.The player can obtain most fish from using a Fishing Spear, or through the use of a Fish Trap. The player can also use a Fishing Rod to catch Fish, but this is far less effective and the player catches few fish by using them.

Along with the smaller fish, larger fish like Sharks and Marlins can be found dwelling among them. The player is able to obtain Large Meat after hunting a shark or marlin, however this is considered a highly dangerous practice, depending on the creature being hunted; catching smaller fish is a safer alternative, as it will mostly prevent harm done to the player.

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