The baby penguin (Sea Life Sydney Aquarium/Facebook)

The Gentoo gay penguin couple who adopted an egg has hatched their baby chick, Sea Life Sydney Aquarium announced on Friday (October 26).

Sphen and Magic welcomed their baby, who has been temporarily called Sphengic after both of their penguin parents, into the world on October 19.

The tiny chick, whose permanent name will be decided after their gender is determined in two months’ time, weighs 91g—which is less than an average apple, or an iPhone.

The baby chick weights less than an apple. (Sea Life Sydney Aquarium)

Announcing the news on Facebook, the aquarium wrote that “the proud dads are doing well and are so in love with their precious bub. 🐧❤️🐧”

Their parents were given the chance to practise parenting with a dummy egg before staff decided they were ready for a real one, calling them “absolute naturals.”

The aquarium has now reported that “the loving foster parents are co-parenting exceptionally well to raise their young.”

Magic and Sphen (Sea Life Sydney Aquarium)

Tish Hannan, the Penguin Department Supervisor at the institution, said in a statement: “Baby Sphengic has already stolen our hearts!

“We love watching the proud parents doting and taking turns caring for their baby chick.”

The couple’s abilities would be tested over the next few weeks, as they strive to help their as-yet-unnamed chick to survive.

“The first 20 days of a penguin chick’s life are the most vulnerable,” Hannan explained, “so it is extra important the chick is very happy, healthy and well fed by his parents.

The happy couple are now parents (Sea Life Sydney Aquarium)

“We can’t wait for the world to fall in love with Baby Sphengic like they did with our amazing same-sex couple, Sphen and Magic!”