PUFFERFISH BUCKET

Most people meet a pufferfish by accident and remember it as the thing that poisoned them. It is also the only ingredient that brews water breathing, which is what makes 3 emeralds from a passing merchant look reasonable the week before you try an ocean monument. No job villager stocks it. The Wandering Trader is the entire supply chain. No recipe in Java 26.2 produces it.

What you are buying is a live fish in a container, and that matters more than it sounds. Pour the bucket out and you keep the bucket, so the 3 emeralds covers the iron as well as the fish. Kill the pufferfish once it is swimming and it drops the item a brewing stand wants. That is the whole loop: emeralds in, potion ingredient and an empty bucket out, without ever finding a warm ocean.

Be honest about the alternative, though. A fishing rod pulls pufferfish out of any water eventually, and if you already live on a coast this trade is a convenience rather than a shortcut. It earns its price in a landlocked base, in a world where the nearest warm ocean is a long boat ride, or on the evening you realise the monument trip is tomorrow and you have nothing to brew.

3 emeralds for 1 bucket, 4 times, which is 12 emeralds for everything a single trader will ever sell you. The figure does not vary between traders. Profession prices roll a range and get cheaper when you cure the villager; his are printed in the trade table and stay there.

There is no second source to play against it. Not the Fisherman, who deals in cod and salmon and one bucket of his own, and not the Cleric, whose brewing stock stops at the finished potion. Search the whole village and no profession lists a pufferfish bucket at any tier, in either edition.

He also will not take it back. His buying list is short and this is not on it, so the offer runs one way only: emeralds out of your pocket, fish into it.

He asks 3 emeralds each, and 59 of the other 75 come cheaper. Price is the easy part: he draws his stock from a shared pool, so catching one that happens to be carrying pufferfish bucket is the real constraint.

The Wandering Trader asks 3 emeralds for a pufferfish bucket. 8 of the 72 villagers that pay emeralds, emptied out:

3 dark oak boats against 90 flint for the same 3 emeralds, 30 times the carrying, and the shortest wait is the Butcher at 1.9 real minutes of shelf, gathering not counted.

Everything you know about steering villagers is useless here. The Wandering Trader belongs to no village, claims no workstation and has no tiers, so there is no block to break and replace until the offer you want appears. He spawns near a player with two llamas on leads, stays a while, and leaves on his own clock whether you traded or not.

That leaves one real tactic: see more traders. His stock is drawn once, when he spawns, from a pool of 78 offers with 5 taken, so the trader in your garden either has the pufferfish line or he does not and nothing you do today will change it. Playing near your base rather than deep in a cave means you are actually present when one arrives, which is most of the battle.

When you find one carrying it, buy the slot out. 4 buckets for 12 emeralds is the maximum any trader will ever hand over, and there is no coming back for more because he does not restock. Bring the emeralds with you; nobody wants to walk home for currency while a timer runs.

If you would rather keep him, a name tag stops him despawning and turns the encounter into a shop you can revisit for the rest of his stock. Handle the fish carefully once it is out: a pufferfish stings anything that swims into it, and an aquarium you cannot clean without taking poison is a design mistake you make exactly once.

Buy for the brewing, not the aquarium. One bucket is one fish and pufferfish do not breed, so 4 purchases is 4 fish and that is the end of it. If the plan is a tank full of them, bring the emeralds for a full slot in one visit.

Count the bucket in the price. Releasing the fish leaves you holding an empty bucket, so in an iron-poor world the 3 emeralds is buying two useful things at once. That is the strongest argument for this trade and almost nobody makes it.

Also on the wandering trader's list: slimeball, open eyeblossom, pale oak sapling, brain coral block, bubble coral block, fire coral block. The coral blocks in that group come from the same warm oceans the pufferfish does, so a trader carrying one of them is often carrying the reason you wanted to go there anyway. His full stock and how it is drawn are on the Wandering Trader page.

A pufferfish is food in the technical sense only: eating one poisons you, makes you nauseous and drains hunger, which is a lot of punishment for a snack. The bucket exists to move the fish alive, not to carry lunch.

Its real use is brewing. A pufferfish is the ingredient for water breathing, and there is no second recipe, so anybody who intends to spend time in an ocean monument needs a supply of them.

Placed from a bucket, the fish stays where you put it and does not despawn, which makes the bucket a way to keep a brewing ingredient alive in a pond rather than counting the ones in a chest.