Prestige
Ascend to a new world once you've mastered this one.
Requirements
Prestige unlocks once you've reached player Level 500 AND caught at least one of every fish species in your current world. Full Museum dex completion, no exceptions. Check /prestige (alias .ascend) any time to see exactly how close you are to both requirements.
What resets
Prestiging is a real reset: your player level and XP go back to 1/0, coins reset to the starting amount, your fish inventory (backpack contents) empties, your rods reset to just the starting Wood Rod, your baits and eggs clear out, your pets and any incubating eggs are gone, energy refills to max, and your Luck plus your Ancient/Celestial/Divine pity counters all reset to zero.
What you keep
Gems, Ancient Museum Coins, your Museum collection and museum buffs, achievements, guild membership, and every backpack tier you've ever bought all carry over untouched. Owned minions keep their level, XP and ownership too. Only their assigned rod and backpack contents are cleared, matching the same reset your own gear gets. Your completed dex from the world you're leaving isn't deleted; it's archived internally rather than wiped, even though there's currently no in-game command to browse old dexes.
The reward
On top of unlocking a brand new world (new fish, new rods, new bait, new pets. See the Worlds article), prestiging grants an immediate +30% XP bonus that lasts 3 days, helping you power back through the early levels quickly.