To buy a goldfish in My Child New Beginnings, unlock the shop, open the Pet/Aquarium category and keep refreshing until the fish appears on the rotating list. Once it is bought, the real work starts: talk the child out of overfeeding it, because a fish that lives gives you a piece of furniture and a fish that dies gives you an achievement medal instead.
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My Child New Beginnings pet fish: buying it
Play until the shop unlocks.
Open the shop and switch to the Pet/Aquarium category.
Buy the goldfish with in-game coins.
The stock list rotates, so the goldfish is not necessarily on the current list. Keep refreshing until it appears. On the mobile build a normal refresh is watched as a rewarded ad, and if a refresh seems stuck, clear the cache and log back in. The rest of the shop's tabs and stock rules are here.
Why the purchase is not immediate
The goldfish tank is one of only two shop items whose purchase is waiting on a chapter trigger - the other is the school backpack. Ordering it tells you that it unlocks a new story chapter, that it might take a while to arrive and that it will use story battery.
The goldfish is one of the game's hidden events, and there are more of them scattered around the chapters. The full hidden event list is here.
Keeping the fish alive
The goldfish is a pet the child looks after, and the child will want to feed it more than it should.
Talk the child out of overfeeding. If the fish survives because you advised the child to feed it less, it triggers the Goldfish Frame furniture piece.
If the fish dies, you receive the "Death Education" achievement medal instead.
So the same purchase branches into two rewards, and the branch is decided by one conversation with your child. The daily care rules that make that conversation easier are here.
What it costs
The price tag shown in the shop is the only figure that counts for the goldfish - no fixed price is published anywhere else, and the rotating list means two players can pay different amounts for the same item.
How the care rules work
Overfeeding is a symptom of the same rule that governs the rest of the house: the child's own state drives what she does, and a stable, happy child is easier to reason with. The daily care rules are here.
FAQ
Why did my goldfish die?
Overfeeding is the usual cause. Advise the child not to overfeed the fish: a fish that survives unlocks a picture-frame furniture piece, and a fish that dies does not.
Why can I not find an item in the village shop?
Stock rotates, so an item is not necessarily on the list at the moment you look. Refreshing swaps the food and toy listings, and the school backpack only turns up after you page through the Clothes tab.