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Arctic char (Salvelinus alpinus) is a cold-water fish that is native to Arctic, sub-Arctic, and alpine lakes and coastal waters in the northern hemisphere. Here is some basic information about Arctic char:

Habitat: Arctic char have a broad range, from the Arctic islands of Canada and Siberia to more southern locations in North America and Eurasia. They thrive in both fresh and saltwater, and some populations are anadromous (migrate from the sea to freshwater to spawn), while others spend their entire lives in freshwater.

Size: The size of Arctic char can vary greatly, depending on the environment and the specific population. On average, they can grow up to 2-3 feet in length and can weigh up to 15-20 pounds. Some much larger specimens have been recorded.

Appearance: Arctic char are generally dark brown to greenish-blue on their backs and have lighter sides and bellies. They typically have small, pink or red spots along their sides. During the spawning season, the bellies of males become bright red. They have a streamlined body shape similar to both trout and salmon.

Diet: Arctic char are opportunistic feeders. Their diet can include insects, crustaceans, and small fish. Larger char are also known to eat smaller ones in some populations.

Taste and Culinary Uses: Arctic char is prized for its delicate flavor, which is often described as a cross between trout and salmon. Its flesh varies from pink to deep red, and it has a rich, somewhat sweet flavor. It is often grilled, broiled, or pan-seared and is considered a good substitute for those who find salmon too strong.

Conservation and Farming: Many populations of Arctic char are considered stable, but some landlocked populations are under threat due to pollution and habitat destruction. Arctic char farming has become more common and is often done in an environmentally conscious way. It is considered a good sustainable seafood choice.

Fishing: Arctic char is also a popular target for sport fishing, especially fly fishing. The extreme locations where they are often found add to the allure for many anglers.

Reproduction: Arctic char, like other salmonids, are known to spawn in freshwater bodies. They prefer to lay their eggs in the sandy or gravel bottoms of streams or lakes. Interestingly, Arctic char can have multiple spawning events in their lifetime, unlike Pacific salmon which die shortly after spawning.

Adaptability: Arctic char are extremely adaptable, capable of surviving in a variety of habitats, including conditions with very low oxygen levels and very cold temperatures. This adaptability has allowed them to inhabit a range of environments and to survive in locations where other fish species would not be able to thrive.

Economic Importance: While not as widely commercialized as salmon, Arctic char is considered a valuable species in certain regions. It is an important food source for indigenous communities in the Arctic. Furthermore, because of its mild and pleasant taste, it has gained popularity in the culinary world and its aquaculture has been growing, providing a sustainable alternative to overfished species.

Remember, like any seafood, when you're shopping for Arctic char, it's always a good idea to check whether it has been sustainably sourced. Organizations like the Marine Stewardship Council offer certifications to help consumers make more environmentally-friendly choices.

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