Ride A Fish Lightning Mutation: Rain Strike and Fish Speed

In Ride A Fish, the official description makes exactly one promise about storms: "⛈️ The rain can strike your fish, causing them to mutate and become faster." That sentence is the whole official record of the lightning fish mutation. It says the event is possible ("can strike"), names the outcome (a mutation that makes the fish faster), and attaches no odds, no multiplier and no duration. Below you'll find what that claim does and doesn't tell you, plus a way to verify a speed change on your own fish instead of trusting second-hand numbers.

What the official description says

The line above comes from the How-to-play text in the official Roblox game details for Ride A Fish (Dream TW Games), and the identical wording appears on the game's Creator Exchange, Medal.tv and RoRizz listings — so it's the developer's published description, not a fan paraphrase.

Read it precisely:

• "can strike" — conditional. Rain striking a fish is possible, not guaranteed on every storm or for every fish.
• "mutate and become faster" — the stated outcome is a fish-side mutation with a speed benefit.
• Everything else — which fish qualify, how often it happens, how big the gain is, whether it's permanent — is simply not in the description.

Rain, strike and fish speed outcome

In actual play, mutation moments are reported by players themselves. Gameplay videos show mutation notifications arriving during storms and being attributed to specific fish: one narrator's pink-purple fish is named as getting a Bubble mutation, another player's large shark appears to gain one, and a second video mentions a "Thunder" mutation. The same narrator lists fish mutation names as Bubble, Thunder and Bolt and claims Bolt pays the most money and speed. Treat those as player reports — the names come from narration, and none of the claimed money or speed values is backed by a displayed measurement.

Two look-alike events must not be merged into this one:

• The one rain strike cleanly documented on video hit a carried egg, not a fish: a Coral Egg gained a Rays label and a "Mut[RAYS] x1.5" tag appeared. That label never identifies what it multiplies, so it is not evidence of any fish speed bonus — it belongs to the egg mutation side of the game.
• One store listing separately describes rare-weather egg mutations, where mutant fish hatch from mutated eggs. That is a different mechanic about eggs, not evidence that a struck fish becomes faster.

How to verify the change on a real fish

No published source shows a controlled before/after measurement for a struck fish yet, but the game gives you everything needed to run that test yourself: speed numbers are readable directly on a fish and comparable fish-to-fish in normal play, and the aquarium panel shows a card per fish with EXP, weight, Coins/s and Feed/Unequip controls (how speed works in general is covered in the fish speed guide). Run the check like this:

1. Set a baseline before the storm. Confirm which fish is active and read its current speed value. If rain is already falling, note the fish and its label before anything else, so a later comparison has a before-value.
2. Keep feeding out of the test. Feeding raises a fish's speed, so don't feed between measurements — a meal would fake or hide a mutation gain.
3. Read the notification, not the lightning. A flash during rain proves nothing. When a mutation message appears, check which object it names. It only counts as a fish event if the message names your fish.
4. Record the after-state. If your fish was named, read its label and speed value again and note the mutation name shown.
5. Re-run the same route. Ride the same fish over the same route you used for the baseline, with the same timing rule, and compare. Report the unit and conditions of whatever you measure — travel time is not the internal speed stat; the number shown on the fish is.

You've verified the mutation when both are true: an explicit message and label name your fish, and the same-route comparison shows that fish faster than its own baseline. If the message named an egg — as in the recorded example — the event says nothing about your fish's speed either way.

Unknown chances and persistence

None of the following is stated by the official description or demonstrated in gameplay footage, so don't build plans around them:

Because no numbers exist yet, judge the mutation by what you can see on the fish itself: an explicit strike notification and a same-route measurement. For how rain fits among the game's other weather events, see the weather guide; if an update ever publishes official mutation values, they'll appear on the updates page.