Híðarvatn in Selvogur has for years been one of the most productive Arctic char lakes in the country. Its maximum depth is about 5 meters, and its size is just over 3.3 km². Its drainage is through Vogsós, but the lake comes up from the lava through countless springs. Hlíðarvatn is a very exciting fishing lake and thousands of char are caught there every summer. This is a fish that is considered very delicious and fun to eat. Most of the fish are 0.5-1 pounds, but every summer a few 5-pound fish and even bigger ones are caught. In addition to sea char, occasional salmon have been caught in the lake.
The angling club Árblik is one of the clubs that leases fishing rights in Hlíðarvatn. It was established in 1988. The club rents out 2 rods together with a fishing cabin and the rods are rented out together.