Adelaide zookeepers are farewelling Australia’s oldest hippopotamus, who has died at the Adelaide Zoo.

The 54-year-old hippo named Brutus had lived at the zoo for the past 45 years.

The hippo was euthanased by zoo staff this morning, following the deterioration of his health.

Brutus was much-loved by zoo staff and visitors and was one of the zoo’s longest-standing residents.

His female partner Susie died in 2017 at the age of 49, and at the time was the oldest female hippo in captivity.

And while the zoo is closed to visitors at the moment, if you’re looking to commemorate Brutus’s life at-home, zoo staff have asked people to enjoy a slice or two of watermelon, which was always his favourite treat.