In the Roblox tycoon simulation Steal A Fish (created by MY FISH FRIEND), defending your base is just as critical as fishing along the river. Players generate passive income from fish stored inside their base slots, but rival players can walk inside, pick up your high-earning sea creatures, and carry them back to their own bases.

Securing your earnings requires active force field management, tactical knockback weapons, fast teleportation, and securing unstealable fish mutations.

Managing the Force Field and Base Lockdown

Every player's base features an entrance barrier controlled by a button at the back of the house. Stepping on this button activates a temporary force field that blocks all rival players from walking through your doorway.

By default, the free force field lasts for roughly one minute. Once the timer expires, the barrier drops and your fish are exposed until you manually hit the button again. You can improve this protective window in two ways:

  • Rebirthing: Completing rebirth tiers grants permanent defensive bonuses, such as adding +10 seconds to your active force field duration alongside increased walk speed and offline earnings.
  • 24-Hour Shield: For hands-off protection, players can purchase a 24-hour force field for 149 Robux, keeping the barrier active continuously across play sessions.

Keep in mind that hostile players can spend Robux or use specific mechanics to temporarily bypass or open enemy doors. Maintaining situational awareness is necessary even when your shield is active.

Combat Tools and Knockback Weapons

When intruders break into your base or lurk outside waiting for the shield to drop, defensive weapons purchased from the Tool Store are your primary line of defense. Equipping a weapon from your hotbar allows you to knock rivals away or freeze them before they make it back to their base.

Common defensive weapons and tools observed in the game include:

  • Slap Glove (Default): The basic starting tool. It delivers a short-range slap that pushes enemies back slightly.
  • Silver Slap ($500): Upgrades your knockback distance, sending intruders flying further from your entrance.
  • Golden Slap: An advanced melee glove offering substantially stronger pushback on hit.
  • Flintlock Pistol: A ranged firearm that shoots and pushes approaching targets from a distance.
  • Blunderbuss: A heavy ranged weapon designed to blast intruders away, though it features a longer reload time.
  • Freeze Gun & Ice Slap: Higher-tier rebirth tools (including the 1 Billion cash freeze weapon) that temporarily immobilize targets on the spot.
  • Robux Weapons: Premium defense options such as the RPG or Nuke Slap produce massive knockback explosions that blast invaders across the map.

Because thieves carry a heavy movement speed penalty while physically holding a stolen fish, hitting them with a firearm or slap glove makes it easy to halt their escape.

Rapid Response with the House Teleport and Intrusion Alarm

Catching thieves before they reach their own base requires rapid transit. If you are standing out by the river tunnel buying fish or browsing the Tool Store, returning to your base on foot can take too long.

  • House Teleport Button: Clicking the on-screen "House" button instantly teleports your avatar directly to the front entrance of your home, allowing you to intercept anyone carrying your fish.
  • Theft Alerts: When an enemy grabs a creature from your base, an on-screen alert notifies you that a specific player is stealing your fish. You can run down the carrier or click the prompt to buy the fish back.
  • Intrusion Alarm Game Pass: Available in the store for 149 Robux, this pass provides immediate warnings when unauthorized players enter your base territory.

Deploying Unstealable Fish and Protective Mutations

The most reliable way to secure your highest-earning pets is through the "Unstealable" modifier. Fish possessing this status cannot be picked up or robbed by other players, even if your front gate is wide open.

  • Unstealable Mutation: When fish spawn from the river tunnel, they have a chance to roll random mutations. Base mutation tables show a 7.5% chance for the Unstealable attribute (alongside aesthetic modifiers like Gold at 5%, Void at 2.5%, and Dead at 0.2%).
  • Limited Robux Pets: Certain Robux-exclusive creatures, such as the Demogorgon Worm, spawn with the unstealable tag natively, ensuring they remain in your base permanently regardless of raids.

Filling vulnerable ground-floor slots with unstealable fish eliminates the risk of high-value losses while you focus on collecting rebirth requirements.

Base Defense Tools and Game Passes

Tool / ItemSource / CostDefensive Function
Default Slap GloveFree (Starter hotbar)Basic short-range melee knockback against intruders.
Silver SlapTool Store ($500)Increased pushback distance to clear base doorways.
FlintlockTool Store (Cash)Ranged projectile attack that knocks enemies back.
Freeze GunTool Store / Rebirth ($1 Billion)Freezes targets in place to stop fleeing thieves.
24-Hour Force FieldIn-game prompt (149 Robux)Locks the base entrance continuously for 24 hours.
Intrusion AlarmStore Pass (149 Robux)Alerts you when players enter your property.
Invisible CapeStore Pass (799 Robux)Allows base owners to ambush thieves invisibly.
x2 SpeedStore Pass (199 Robux)Doubles run speed to quickly chase down thieves.

Frequently Asked Questions

Can other players steal fish while my force field is active?

No, the force field blocks players from walking through your doorway under normal gameplay. However, players who already slipped inside before the barrier went up can still attempt a theft, and certain players may use premium unlocks to open doors. Always verify your base interior is clear before locking it down.

Do I lose my defensive weapons when I rebirth?

Rebirthing resets the specific fish required for that rebirth tier and your current cash balance, but it permanently expands your base capabilities. It unlocks higher-tier weapons in the shop (such as the Freeze Gun and advanced slaps), increases base force field duration, and unlocks access to upper floors.

What happens when a player picks up a fish to steal it?

The robber suffers a severe movement speed reduction while carrying the fish toward their own base. If you hit them with a melee slap, shoot them with a ranged weapon, or if their attempt fails, the fish is dropped or returned to your base.