Wilder Institute/Calgary Zoo gentoo penguin Akio euthanized

Calgary’s zoo announced the passing of Akio on social media Monday. (Courtesy Wilder Institute/Calgary Zoo)

One of the Wilder Institute/Calgary Zoo’s gentoo penguins has had to be euthanized.

Calgary’s zoo announced the passing of Akio on social media Monday.

According to the zoo, the 15-year-old male gentoo died in April, “following a rapid decline in his health.”

The zoo said Akio suffered a respiratory fungal infection in 2013.

Since then, he had been living with a chronic respiratory disease.

Over the past year, the gentoo’s health declined and in April reached the point where “response to treatment was not sufficient and his breathing continued to deteriorate.”

“With his welfare significantly compromised, the decision was made to euthanize him,” the zoo said.

Akio came to the Wilder Institute/Calgary Zoo in 2012.

He celebrated his 15th “hatchday” in December.

“He was a beloved member of our zoo family and will be deeply missed,” the zoo said.