The "very important little penguin" is the first of its kind to hatch in the UK in more than a decade.
The flow cannon feature at Marwell Zoo was powered up at the weekend.
The move follows a chance conversation at the wildlife attraction and replaces imported fish.
Penguins are being kept cool with ice during the heatwave at Birdland in Bourton-on-the-Water.
The "precious egg" was laid at the wildlife attraction in Bourton-on-the-Water.
Scientists say 13,000 southern elephant seal pups on Heard Island have died of the H5N1 strain.
The aquarium's owner will also stop breeding gentoo penguins at its London and Birmingham sites.
The new Humboldt penguin chicks at the Bewdley attraction are named after musical legends.
A Cornwall sanctuary says global records show Spneb is the oldest Humboldt's penguin in captivity.
