

4 Fantastic Fish is a medium-volatility online slot from Yggdrasil with an RTP of 94% and a maximum win of 15,000x.
Page updated July 2026
Confusingly for anyone comparing slot libraries, there are two games sharing the name 4 Fantastic Fish - this one is Yggdrasil's version, built on a 6-reel, 4-row grid with 4,096 ways to win, and pitched at medium-high volatility rather than the harder-edged maths of some sister titles in the range.
The setting is the expected sun-warmed tropical ocean - coral reefs, shafts of light breaking through the water, and a colourful cast of fish, sharks and giant squids swimming past a backdrop of treasure chests and fishing gear. Animations lean into the drama, with the shark and squid appearances given proper weight rather than being throwaway extras.
Wins land when matching symbols connect on adjacent reels starting from the leftmost position across the 4,096 ways. Certain fish carry instant Cash Prize values that pay out directly when they form part of a winning combination. Landing three or more scatters opens the Respins Bonus, where fish lock in place on the grid and any newly landed fish resets the respin count, letting the round run on as long as new value keeps appearing. Inside that bonus, the Shark and Giant Squid modifiers can trigger to devour whole rows for a combined prize or rearrange the board to manufacture better combinations.
At 94%, this version's return sits a little below the higher-RTP fishing slots on the market, so it pays to compare configurations if more than one is available where you play, but it's still a workable figure for a feature-heavy title like this.
Rated for medium-high swings, the game suits players happy to ride out some quieter stretches for the payoff of the respin bonus doing its work. Stakes range from £/€0.20 to £/€100 per spin, a wide span that covers cautious low-stake sessions right up to serious high-roller betting.
There's also a bonus buy option for players who'd rather skip straight to the Respins Bonus than wait for scatters to land naturally, useful for testing the Shark and Giant Squid mechanics without grinding through the base game first. Fish that lock during the respin round keep their cash values on show throughout, so it's easy to track exactly how close the round is to a big finish as new symbols keep arriving.
Between the locked-fish respin structure and the two creature modifiers doing the rearranging, this Yggdrasil edition of 4 Fantastic Fish has enough of its own identity to stand apart from the rest of the range, even sharing a name and a theme. Worth trying the free demo on johnessyslots to get a feel for how the Shark and Squid interact before wagering for real.
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4 Fantastic Fish has an RTP (return to player) of 94%. RTP is the theoretical percentage of total stakes a slot returns to players over a very large number of spins, as published by Yggdrasil — individual sessions can land far above or below it.
4 Fantastic Fish is rated medium volatility. Medium-volatility slots sit between the extremes — a balance of win frequency and win size.
The advertised maximum win for 4 Fantastic Fish is 15,000x. Max wins are extremely rare by design — treat them as a ceiling, not an expectation.
4 Fantastic Fish is developed by Yggdrasil and was released in Sep 03, 2025.
4 Fantastic Fish plays on a 6×4 grid with 4096 paylines.
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