Steal Fish Eggs Mutations and Sizes
The storefront promises rarer fish, sizes, and mutations. Here is how to read them without a fake odds table.
The official Steal Fish Eggs description tells you to discover rarer fish eggs, fish, sizes, and mutations. It does not publish a multiplier table. This page is the honest version: what the art already committed, how to treat a 0.01% rainbow, and when a huge egg is a trap. Pair it with how to hatch for the timer and best fish for the keep-or-sell cut line.
What is confirmed
Rainbow shark poster. Official split art shows a rainbow-scaled egg on a 5s clock revealing a rainbow shark at 0.01%. Treat 5s as marketing. Real rare hatches in this genre stretch. Treat 0.01% as “do not build a session around one roll.” If you hatch it, read the $/s, not the particles. If it beats your worst slot, it is a keeper even if the base species is unfashionable.
Jellyfish Egg tag. The nest under the pink boss shows JELLYFISHEGG $89,121Sp/s. That is an income callout on the egg before you steal. Sizes and mutations sit on top of a number like that; they do not replace it. Scout the tag empty-handed (how to steal eggs).
Sizes. Bigger eggs are harder to carry home and often pay more if you bank them. A huge egg you drop to a shark is not an upgrade. If the giant clutch keeps falling, you need Speed, not a smaller-egg addiction.
There is no confirmed Silver / Golden / Rainbow ladder copied from Steal an Egg. Do not paste that game’s 1.25x / 2x / 2.5x sheet here. Different universe.
How to farm mutations without going broke
- Fill the tank with honest income from nearby nests (Getting Started).
- Buy Grey, then Blue. Luck does not outrun a jellyfish.
- Only then spend extra trips on tagged or oddly colored eggs.
- After hatch, compare income. Keep or replace. The fish index is the roster method.
- Lock the tank (how to protect your base). A rainbow fish is a raid magnet on a 6-player shard.
Admin events in this genre dump mutated tags. Steal Fish Eggs has not published an admin calendar. If the shard suddenly fills with glowing eggs, steal and bank. That is a live event, not a code. Recheck free rewards and what is new afterwards.
What a mutation is not
- Not a reason to skip Trails.
- Not a trade sticker. The storefront has no plaza.
- Not a guaranteed Universal Trail substitute.
- Not a Steal an Egg Sakura Incubator. There is no Cherry Blossom crane on this map.
If a hatch looks wild and pays less than your worst common, it is a clip. Sell or overwrite when the UI lets you. Pretty tanks still die to the first raid.
Sizes versus Speed
Carry weight is the hidden Speed check. Far water plus a huge egg is how Gold Trail accounts still drop. Test: steal a medium egg from that nest first. If that banks, try the giant. If the medium already fails, train. Biomes is distance; this page is why two eggs in the same nest are not the same steal.
After the September 13 update, expect new fish and new paint. Apply the same rule the same night: tag first, particles second. Named mutation rows will land on this page when the card text is real, not when a thumbnail guesses “Rainbow+.”
Session rule
One mutation hunt per hour of honest farming is plenty. The rest of the hour should be pool, Trail, and a nest you can already escape (how to escape bosses). That mix is how you still have a tank if the 0.01% does not fire.
Related: how to hatch, fish tier list, Trail Shop.
Frequently Asked Questions
Quick answers to the most common Steal Fish Eggs questions.
How do you get a rainbow mutation in Steal Fish Eggs?
Hatch eggs and hope. Official art cites a 0.01% rainbow shark. There is no published guaranteed incubator.
Do sizes change income?
Usually yes, and they also make the carry harder. Bank the egg first. Speed first if you keep dropping it.
Should I keep a pretty fish that pays less?
No. Use the cut line on best fish. Particles are not $/s.
Are Steal an Egg mutation multipliers the same here?
No. Different place ID. Do not copy Silver 1.25x or Sakura Bloom sheets.