Fish an Anime RNG Backpack: Storage Limits, Rebirth Gains, and the Infinite Backpack

Quick answer

Every catch lands in your backpack, and fishing — including auto-fishing — keeps running until the inventory fills, at which point production stops and the rest of the session is wasted. The immediate fix is selling: sell stored catches down before or during a session to free space. Permanent capacity comes from rebirths and larger backpacks bought in the gem store, topped by the Infinite Backpack, which removes the catch storage cap entirely.

• Catch flow: each catch is received into the backpack, and from there you can place the character on a base platform, keep it stored, or sell duplicates.
• When the backpack fills, auto-fishing stops producing — keep an eye on storage during AFK sessions so the rest of the run isn't wasted.
• To free space mid-session, sell all stored catches and let fishing resume.

Storage from rebirths

Rebirthing is the repeatable path to a bigger backpack. Each rebirth grants additional backpack space along with extra plot platforms and a higher permanent cash multiplier, and it trades in only cash and food — characters, upgrades, and research carry over — so the storage gain is permanent progression rather than something you lose.

A reported reading of the game's in-game storage wiki entry puts the gain at 50 extra slots per rebirth. Treat that as an unconfirmed, update-sensitive figure: there is no confirmed starting capacity, and capacity values between rebirth milestones are not documented, so don't project your total from that number — check the storage wiki entry in-game after each update. Beyond rebirths themselves, gem shop nodes may add more storage, but no specific node names, costs, or values are documented, so verify what your client actually offers.

Gem-store backpacks and the Infinite Backpack

Beyond rebirths, the purchase path runs through the gem store: you raise the storage limit by buying larger backpacks there — one documented session shows a player buying another backpack mid-run during a long fishing stretch — with the Infinite Backpack sitting at the top end. The permanent Infinite Backpack removes the catch storage cap entirely: once you own it, storage stops being a constraint at all. In gem-purchase priority advice it consistently ranks last, explicitly because it is expensive, not because it is weak — it is better saved for much later because of its high price.

Reported Infinite Backpack prices (currently conflicting)

Reported prices for the Infinite Backpack conflict across dated guides and store listings, and the figures are version-sensitive. Check both the Gem Store price and the game's gamepass listing in your own client before spending — either may differ from every figure below after an update.

Comparison

Comparison

Reported Price	Where It Was Reported	Report Date
1,750K gems in the Gem Store, with the Robux column empty (no Robux alternative listed)	Codes & gem farming guide	2026-08-26
319 Robux as a gamepass	Fishing rods tier list	2026-08-27
799 Robux on the game's gamepass listing	Roblox gamepass listing tracker	—

Planning AFK sessions: Auto Fish and Auto Sell

Checklist

• Upgrade storage before any long AFK stint

  Expand backpack space through rebirths and gem purchases first, and sell down stored catches before starting if you're close to the cap.

• Expand storage to fish longer between sell trips

  A bigger backpack pairs well with auto-fishing, which stops producing the moment storage fills.

• Let Auto Sell clear junk catches

  Auto Sell removes the constant manual trips back to storage during long fishing sessions.

• Save the Infinite Backpack for late game

  In gem-purchase advice, Auto Sell becomes useful in the mid-to-late phase for longer sessions, while the Infinite Backpack is a late purchase — expensive, but once owned, storage stops being a constraint entirely.