If you’re diving into the world of My Fishing Pier Roblox, understanding the different mutation types is essential for catching high-value fish and making serious progress. Fish in this game don’t just vary by species—they can mutate in appearance, size, and value depending on time, weather, and bait. This guide explores all known mutation types, their value multipliers, how to trigger them, and why some are worth hunting more than others.
What Are Mutations in My Fishing Pier?
In My Fishing Pier, mutations are special traits that alter a fish’s look, size, and sell value. These aren’t just visual effects—each mutation brings unique value modifiers that can either multiply your earnings or, in rare cases, reduce them.
There are three main categories of fish mutations:
Main Mutations – based on visual rarity like Shiny or Diamond.
Size Mutations – change the physical size of the fish.
Weather Mutations – appear only under specific weather stages such as Snow, Heatwave, or Storm.
Let’s explore each of these in detail.
Main Mutations – Highest Value Boosts
Main mutations are some of the most desirable traits, especially for players looking to maximize profits. They apply a distinct visual to the fish and come with significant sell multipliers.
| Mutation | Multiplier | Spawn Chance | Notes |
|---|---|---|---|
| Shiny | x5 | 1.4% | Reflective finish, bright and noticeable. |
| Silver | x5 | 1.3% | Metallic sheen, similar to Shiny. |
| Gold | x10 | 0.8% | Golden glow, very rare and lucrative. |
| Lunar | x10 | 0.5% | Only appears at night, moonlit shimmer. |
| Diamond | x20 | 0.3% | Most valuable; emits sparkling diamond effect. |
🛈 Tip: Fish during nighttime with rare bait like Cryptic Relic to boost your odds of getting Lunar or Diamond variants.
Size Mutations – From Tiny to Leviathan
These mutations affect the size of your fish and can drastically shift its value—positively or negatively. While most fish are normal-sized, a lucky catch could mean a massive payoff.
| Mutation | Multiplier | Chance | Effect |
|---|---|---|---|
| Tiny | x0.4 | 1.5% | Small and low-value. |
| Small | x0.6 | 3% | Slightly below average in size. |
| Normal | x1 | ~90% | Default size, no modifier. |
| Big | x2 | 3% | Doubles the sell price. |
| Giant | x2.5 | 1.5% | Noticeably larger, more valuable. |
| Goliath | x3 | 0.75% | Huge and rare, great for profit. |
| Leviathan | x3.5 | 0.25% | Ultra-rare, top-tier mutation in size category. |
🛈 Tip: Upgrade your rod to increase casting range and hook strength—essential for catching heavier fish like Leviathan.
Weather Mutations – Conditions That Matter
These mutations depend entirely on the weather phase active at the time of fishing. Mutated fish during weather changes are distinct in appearance and can either skyrocket or tank your profits.
| Mutation | Weather Condition | Multiplier | Description |
|---|---|---|---|
| Chilled | Snow Stage 1 | x1 | Subtle frost, neutral value. |
| Frostbitten | Snow Stage 2 | x1.1 | Heavier frost, minor bonus. |
| Frozen | Snow Stage 3 | x3 | Fully frozen fish, high value. |
| Roasted | Heatwave Stage 1 | x1.5 | Slightly scorched appearance. |
| Cooked | Heatwave Stage 2 | x2 | Charred, doubles value. |
| Burnt | Heatwave Stage 3 | x0.5 | Overcooked, decreases value. |
| Shocked | Storm Stage 1 | x3 | Electrified, rare and valuable. |
🛈 Tip: Keep an eye on weather patterns. Plan your fishing sessions around Snow (Stage 3) or Storm for high-value chances like Frozen and Shocked fish.
How to Increase Mutation Chances
While mutations are rare by nature, there are several ways to improve your odds:
1. Use Rare Bait
Cryptic Relic, Mystery Meat, and other high-tier bait types increase the chance of mutated fish.
These baits are often found in Mystery Crates or from completing daily quests.
2. Fish at Specific Times and Weather
Lunar and Diamond mutations are more likely at night.
Weather-based mutations only appear under active weather conditions.
Combine rare bait with ideal weather for the best odds.
3. Upgrade Your Rod
A stronger rod allows for faster reeling and better fish retention, which is critical when aiming for larger or rarer mutations.
4. Do Daily Quests
Some NPCs reward Mystery Crates, which can contain rare bait.
Completing these quests adds passive progress toward rarer catches.
Final Thoughts
Mastering the mutation types in My Fishing Pier Roblox turns simple fishing into a game of timing, strategy, and resource management. Whether you’re chasing a glittering Diamond fish or braving the Storm for a Shocked one, understanding how each mutation works gives you a serious edge in both profit and prestige.
So stock up on bait, watch the skies, and cast with purpose—your next legendary catch could be just a weather cycle away.