Explore the complete My Fishing Pier mutations guide on Roblox. Learn how to get mutations, their effects, and the chances of obtaining one.

My Fishing Pier is a unique fishing experience that has been getting popular on Roblox. Currently, the game has over 1.8M visits on the platform and many active players. Mutations in this game are both unique and rare.
With over 19 mutations to get, you’re in luck to get at least one out of the many. Mutations are special attributes that can affect the appearance, size, and value of the fish you catch. These mutations can be influenced by various factors—–including weather conditions and specific game mechanics.
If you’re new to the game, make sure to check out the complete beginner’s guide for this experience.
All Mutations in My Fishing Pier

To start, there are various mutations that you can get on your own without needing a special weather or event. These mutations change the fish’s size and appearance. Mutations apply a price multiplier to the fish, which can fetch you a huge profit. Some of these fishes have a big price multiplier applied, while some have lesser profit than others.
Size-Based Mutations
Although size-based mutations don’t fetch a huge price, they have a higher chance of appearing. Rainy weather increases the size mutation rates by three times. The size mutations include:
Size Mutation | Price Multiplier |
---|---|
Tiny | x0.4 |
Small | x0.6 |
Big | x2 |
Giant | x2.5 |
Goliath | x3 |
Leviathan | x3.5 |
Weather-Based Mutations
Each weather will contribute to the fish’s mutation by applying weather-based mutations to them. Although a weather event takes place for a limited time, they can apply mutations to many fish at once. The price multiplier is also significant so make sure you catch as many fishes as possible.
Weather | Influenced Mutations |
---|---|
Rain | Increases size mutation rates by 3x |
Stormy | Enables Shocked mutation |
Heatwave | Enables Roasted, Cooked, Burnt mutations |
Snow | Enables Chilled, Frostbitten, Frozen mutations |
Other Mutations
Some of the less rare mutations are which take place at a random. These mutations cannot be affected by any other factors.
Mutation | Effect | Occurrence Condition |
---|---|---|
Shiny | The fish have a shiny appearance | 1.4% chance |
Silver | Applies silver color to the fish | 1.3% chance |
Gold | Applies gold color to the fish | 0.8% chance |
Diamond | The fish has a diamond appearance | 0.3% chance |
AFK | Reduces value by 50% | When AFK Mode is active |
Lunar | Fish has a moonlit appearance | 0.5% chance during Night |
Tips for Increasing Mutation Chances
- Upgrade Baits: Consistently using the same bait can upgrade it, decreasing lure speed, increasing mutation chances, and reducing reel time.
- Play with Friends: Fishing with friends can boost your earnings by 10%, and you can utilize their piers and baits, which could contain some mutated fish.
- Complete Daily Quests: Engage with the Quests NPC to complete daily tasks and earn mystery crates containing rare baits.
- Utilize AFK Mode Wisely: While AFK mode allows passive fishing, be aware that it applies the AFK mutation and reduces the fish value by 50%.
Thank you for reading the article. We provide the latest news and create guides for Baldur’s Gate 3, Starfield, ARK Survival Ascended, and more. Also, watch Deltia play games on Twitch or visit his YouTube channel!