In the Roblox game Steal a Fish (developed by MY FISH FRIEND), players buy fish as they drift down a central river tunnel to place inside their personal base. Once secured on a base pedestal, each fish produces passive money per second to fund higher-tier purchases, rebirth requirements, and defensive tools.
How Buying Fish from the River Works
Every fish in the game emerges from a tunnel at the head of the river and swims along a designated current until reaching a fishing boat at the opposite end. If a fish reaches the boat before anyone interacts with it, it despawns from the active pool.
To buy a fish, walk up to it as it travels along the water and trigger the purchase prompt. Completing a purchase requires two conditions:
- Sufficient Cash or Robux: You must hold the exact listing price in your on-hand balance.
- Available Base Slots: Your base starts with limited pedestals on the ground floor. If all floor slots are occupied, the game blocks you from claiming additional river units until you sell an existing fish or unlock new slots. Extra slots unlock through base floor additions via Rebirths or the +2 Slots game pass (199 Robux).
When you purchase a unit from the river, it does not instantly teleport into your base. Instead, it hops across the yard toward an empty pedestal. During this walk, the fish remains vulnerable to interception: other players can outbid, push, or contest it unless your base is shielded or the unit possesses the Unstealable mutation.
Early-Game Fish: Common, Uncommon, and Rare Prices
Starters rely on low-cost fish to bootstrap cash flow before attempting the first few Rebirths. These tiers appear frequently in the river current without requiring luck boosters.
Common Tier
| Fish | River Price | Income per Second |
|---|---|---|
| Sea Star | $100 | $5/s |
| Salmon | $125 | $6.25/s |
| Sea Horse | $150 | $7.50/s |
| Tralalero | $150 | $7.50/s |
| Jellyfish | $200 | $10/s |
| Tung Sahur | $200 | $10/s |
| Pufferfish | $250 | $12.50/s |
| Sapper | $300 | $15/s |
| Turtle | $350 | $17.50/s |
Uncommon Tier
| Fish | River Price | Income per Second |
|---|---|---|
| Bananini | $800 | $17/s |
| Clownfish | $900 | $20/s |
| Boneca Ambalabu | $950 | $21/s |
| Crab | $1,200 | $25/s |
| Eel | $1,200 | $26/s |
| Baddie Fish | $1,200 | $30/s |
| Blue Tang | $1,500 | $33/s |
| Swordfish | $1,600 | $35/s |
| Chrimp | $1,700 | $38/s |
| Bonehead | $1,750 | $40/s |
Rare Tier
| Fish | River Price | Income per Second |
|---|---|---|
| Blobfish | $10,000 | $90/s |
| Brr Patapim | $12,000 | $120/s |
| Piranha | $15,000 | $135/s |
| Udin Din Din | $17,000 | $150/s |
| Anglerfish | $19,000 | $170/s |
| Octopus | $22,000 | $200/s |
| Tralelelo Junior | $22,000 | $200/s |
| Barracuda | $25,000 | $225/s |
| Trippy Troppy | $27,000 | $250/s |
| Trulimero Trulichina | $30,000 | $273/s |
Mid-Game Fish: Epic and Legendary Units
Epic and Legendary fish bridge the gap between basic river farming and late-game progression. Several of these units serve as strict Rebirth requirements, making them high-priority targets whenever they enter the water.
Epic Tier
| Fish | River Price | Income per Second |
|---|---|---|
| Shark | $20,000 | $180/s |
| Gold Fish | $125,000 | $520/s |
| Mermaid | $150,000 | $625/s |
| Skeleton Fish | $150,000 | $625/s |
| Axolotl | $200,000 | $833/s |
| Hammer Shark | $200,000 | $833/s |
| The Waken | $210,000 | $800/s |
| Sturgeon | $250,000 | $1,000/s |
| Saw Shark | $350,000 | $1,450/s |
| Eye Fish | $420,000 | $1,750/s |
Legendary Tier
| Fish | River Price | Income per Second |
|---|---|---|
| Whale | $1,500,000 | $3,500/s |
| Infected Barracuda | $2,000,000 | $4,500/s |
| Megalodon | $2,500,000 | $6,000/s |
| Nuke Fish | $2,750,000 | $5,900/s |
| Long Skeleton | $3,330,000 | $7,000/s |
| Capuchina Fish | $3,500,000 | $7,500/s |
| Worm | $4,000,000 | $8,400/s |
| Manta Ray | $5,000,000 | $10,500/s |
Endgame River Targets: Deep and Secret Scalers
High-tier river spawns shift income generation from thousands of dollars per second to millions, billions, or percentages of your best-performing creature.
Deep Tier
Deep-tier spawns appear on long cooldowns or through active server timers. They offer massive flat-rate earnings that act as the mathematical foundation for percentage-based fish.
| Fish | River Price | Income per Second |
|---|---|---|
| Mutated El Gran Maja | $10,000,000,000 | $1,600,000/s |
| SCP | $50,000,000,000 | $6,940,000/s |
| Mouth Titan | $50,000,000,000 | $9,250,000/s |
| Leviathan | $75,000,000,000 | $12,200,000/s |
| Nightmare Maja | $125,000,000,000 | $16,500,000/s |
| Nightmare Eater | $350,000,000,000 | $38,500,000/s |
| Baron | $900,000,000,000 | $77,100,000/s |
| World Eater | $10,000,000,000,000 | $1,500,000,000/s |
| Deep Mutated Boss | $50,000,000,000,000 | $5,000,000,000/s |
Secret Scaler Units
Secret fish purchased from the river or store do not operate on fixed payout tables. Instead, their earnings recalculate automatically whenever your highest flat-earning base fish changes.
| Fish | River Price | Scaling Rate |
|---|---|---|
| Scottfish | $1,000,000,000 | 50% better than your best fish |
| Spiderfish | $1,450,000,000 | 75% better than your best fish |
| Nightmare Blobfish | $2,500,000,000 | 90% better than your best fish |
| Orcalelo Orcala | $20,000,000,000 | 100% better than your best fish |
| Hungry Tung | $50,000,000,000 | 120% better than your best fish |
| Baby Deep Eater | $35,000,000,000,000 | 130% better than your best fish |
| Hungry Deer | $50,000,000,000,000 | 150% better than your best fish |
| The Moon | $150,000,000,000,000 | 160% better than your best fish |
Limited game pass units like Demogorgon Worm, Evil Bloop, and Undindun Eater (1,499 Robux each) also utilize this system, providing a static 150% boost over your best active producer.
Modifiers, River Speed, and Spawn Boosts
Players can alter the rate and quality of fish emerging from the river tunnel using in-game shop buttons and server boosts:
- 2x Fish Spawn ($500,000 Cash or 49 Robux): Halves the spawn interval between fish exiting the tunnel.
- 2x Fish Speed ($100,000 Cash or 49 Robux): Accelerates the swimming speed of river units down the track.
- Server Luck Upgrades: Tiered multipliers (2x, 4x, 8x, 16x, and 99x) can be purchased using Robux. Higher luck increases the appearance rate of Mythic, Cosmic, Deep, and Secret fish, though it can make low-tier Rebirth targets (like Common Turtles or Epic Saw Sharks) harder to encounter due to pool dilution.
- Guaranteed Spawns: Server banners show countdown timers for guaranteed Mythic, Cosmic, and Deep arrivals.
Fish Mutations
When fish spawn in the river, they have a chance to carry a mutation modifier that alters visual effects, value, or theft vulnerability:
- Unstealable (7.5%): Renders the fish immune to enemy theft attempts both in transit and inside your base.
- Gold (5%): Increases cash production over standard base variants.
- Void (2.5%): Applies a dark visual aura.
- Magma (0.5%): Applies a molten visual appearance and elevated performance.
- Dead (0.2%): The rarest mutation roll observed on the river track.
Frequently Asked Questions
Why does the river say I cannot buy a fish?
You either lack the required cash balance or have filled all active base slots. If your pedestals are full, you must sell a fish from your base before the river prompt will process your purchase.
Do bought fish disappear when I rebirth?
Rebirths only consume the specific fish listed in the Rebirth requirement window (such as a Turtle, Crab, or Saw Shark) alongside the cash fee. All other fish sitting on your base pedestals remain intact.
How do percentage scaler fish calculate income?
Scalers take the highest flat cash-per-second generator in your base and multiply it. If your best flat generator is a Deep Mutated Boss generating $5,000,000,000 per second, a Hungry Deer (150% scaler) generates $7,500,000,000 per second. Scalers do not compound directly off other percentage scalers.
