Many of the dragons on Berk have fish as a major part of their diet, if not their entire diet. Most dragons are able to eat fish, just that some prefer others. For example, Gronckle, which eat rocks, and Deadly Nadders, which usually prefer to eat chicken rather than fish. As a result, many dragons live near water bodies.
Toothless seems especially fond of mackerel, though most dragons have an aversion towards eels. Dragons are known to share food by swallowing a fish whole and regurgitating either the top or bottom half of the fish. This is demonstrated by Toothless and Cloudjumper.
Dragons have numerous hunting styles. Some dragons like the Night Fury, simply stick there head into water and grab any fish present. Others, like the Monstrous Nightmare, dive into water and round up shoals of fish by circling around them. The Bewilderbeast gulps large amounts of fish before spitting them out into the air for its dragons to feed on. The Red Death, however, does not hunt. It relies on other dragons in its command to provide it food. In Dragons: Rise of Berk, dragons that are able to fish dive straight into the sea and fish.
While the accepted practice for fishing is to use a fishing boat, in How to Start a Dragon Academy, it was revealed that dragons can fish extremely well, and so while fishing boats are still the norm, some fish is brought in by dragons. Most fishermen use nets or dragons, but in Dragons: Rise of Berk and School of Dragons, Vikings are seen to fish with fishing rods.
Fish play an important role in many games.
In this game, dragons help Berk fish. Fish is used for levelling up dragons, clearing trees and forests and upgrading the Wood Stack or Sawmill.
Fish is used for feeding dragons and in the fishing minigame.
Fish can be gotten by purchasing a fishing rod and fishing for them at various locations. They are then used for luring dragons before training them.
List of fish
Refer to Eels.
This fish was fed to Toothless during the second time Hiccup met him in the cove. He placed it in a basket before presenting it to Toothless. They are freshwater fish from the School of Dragons fishing minigame.
This fish was also fed to Toothless, together with Salmon.
Hookfang was said to love mackerel.
Minnows are used as bait in the School of Dragons fishing mini game
Perch are freshwater fish from the School of Dragons fishing minigame.
Brown Trout are freshwater fish from the School of Dragons fishing minigame.
Halibut are saltwater fish in the School of Dragons fishing minigame.
Herring are saltwater fish in the School of Dragons fishing minigame.
Viper Fish are saltwater fish in the School of Dragons fishing minigame.
Angler Fish are saltwater fish in the School of Dragons fishing minigame.
Blindfish can be found in underground lakes in School of Dragons.
Along with Blind Fish, this fish can also be found in underground lakes.
Arctic Char can be found on Icestorm Island in School of Dragons
Like the Arctic Char, Northern Wolffish can be found on Icestorm Island.