My Fishing Brainrots Rebirth Guide (2026)

Rebirth in My Fishing Brainrots is how you actually progress. Without it, you’ll hit a wall around hour 10 where everything costs millions and you’re earning thousands. The rebirth system breaks that wall.

I’ve done 7 rebirths so far. Each one felt painful at first but paid off within an hour. This My Fishing Brainrots rebirth guide covers everything you need to know.

What is Rebirth?

Rebirth resets your progress in exchange for permanent bonuses. You lose stuff, but you gain multipliers that make the next run faster.

Think of it like prestige systems in other idle games. You’re trading current progress for long-term power.

What You Lose on Rebirth

Everything temporary goes away:

All your cash (back to starting amount)
All your brainrots (deleted)
All brainrot upgrades (reset)
Your current egg inventory

It hurts. Watching your Legendary brainrot disappear is painful. But it’s necessary.

What You Keep on Rebirth

The important stuff stays:

Fish Index progress (all fish you’ve caught)
Fish Index multipliers (permanent cash bonuses)
Rebirth multipliers (the whole point)
Any permanent upgrades you’ve unlocked

Your Fish Index is the key. Those permanent multipliers stack with rebirth bonuses. A player with 50% Fish Index bonus and 3 rebirths earns way more than someone with 0% and 0 rebirths.

Rebirth Requirements

Each rebirth has two requirements:

Minimum cash amount - You need X coins to rebirth
Brainrot requirements - You need specific brainrots hatched

The first rebirth is easy. Maybe 100k cash and a few Rare brainrots. Later rebirths get expensive. Rebirth 5+ requires millions and multiple Legendaries.

Check the Rebirth button in-game to see exact requirements. They scale with each rebirth level.

Rebirth Bonuses

Each rebirth gives permanent multipliers:

Rebirth	Typical Bonus
1	+25% cash
2	+50% cash
3	+100% cash
4	+150% cash
5	+200% cash
6+	Scaling bonuses

These stack multiplicatively with Fish Index bonuses. Rebirth 3 with 50% Fish Index means you’re earning 3x what a fresh player earns.

When to Rebirth

This is the big question. Rebirth too early and you waste time rebuilding. Rebirth too late and you waste time grinding inefficiently.

My Rule: Rebirth When Progress Stalls

If you’re earning 10k/minute and the next meaningful upgrade costs 500k, that’s 50 minutes of waiting. After rebirth, your multipliers might cut that to 20 minutes. Worth it.

Signs You Should Rebirth

Egg timers feel painfully long
Upgrades cost 10+ minutes of income
You’ve completed most Fish Index entries at your level
You meet the requirements comfortably

Signs You Should Wait

You just hatched a Legendary/Mythic (milk it first)
You’re close to a Fish Index milestone
You barely meet the requirements
You haven’t upgraded your best brainrots

Pre-Rebirth Checklist

Before hitting that button:

Max upgrade your best brainrots (get value before they’re gone)
Complete any close Fish Index entries
Spend all cash on eggs (might as well try for lucky hatches)
Screenshot your stats if you care about tracking
Accept that your brainrots are gone forever

Post-Rebirth Strategy

The first 30 minutes after rebirth are crucial. Here’s the speedrun:

Minutes 0-5

Buy cheapest eggs immediately
Fill all slots with whatever hatches
Start generating income ASAP

Minutes 5-15

Sell fish boxes constantly
Save for Rare eggs
Don’t upgrade Commons (waste of cash)

Minutes 15-30

Replace Commons with Rares
Start upgrading your best Rare
Target Epic eggs

Minutes 30-60

Should have 2-3 Epics minimum
Upgrade focus on highest rarity
You’re now ahead of where you were pre-rebirth

The rebirth multipliers make early game fly by. What took 2 hours before rebirth takes 30 minutes after.

Rebirth Timing Strategy

Here’s my approach for optimal progression:

Rebirth 1-3: Rush These

The early rebirth bonuses are huge. Don’t overthink it. Meet requirements, rebirth, repeat. Each one dramatically speeds up the next.

Rebirth 4-5: Build First

These require Legendaries. Don’t rebirth the moment you hatch one. Let it generate income for a few hours first. The cash helps you rebuild faster.

Rebirth 6+: Patience

Late rebirths have diminishing returns. The bonus from rebirth 6 to 7 is smaller than 1 to 2. Take your time. Build a strong collection. Complete Fish Index milestones.

Fish Index and Rebirth Synergy

This is the secret sauce. Fish Index bonuses are permanent AND they multiply with rebirth bonuses.

Fish Index	Rebirth 0	Rebirth 3	Rebirth 5
0%	1x	2x	3x
25%	1.25x	2.5x	3.75x
50%	1.5x	3x	4.5x
100%	2x	4x	6x

A player with 100% Fish Index and 5 rebirths earns 6x what a fresh player earns. That’s why completing the Fish Index matters so much.

Common Rebirth Mistakes

Things I did wrong so you don’t have to:

Rebirthing Too Early

I rebirthed the moment I met requirements on my first run. Bad idea. I had zero Fish Index progress. The rebuild was painful.

Ignoring Fish Index

Fish Index bonuses are permanent. Rebirth bonuses are permanent. Together they’re multiplicative. Ignoring either one cripples your long-term progress.

Not Upgrading Before Rebirth

Your brainrots are getting deleted anyway. Might as well max them out first and squeeze every coin possible before the reset.

Hoarding Cash

Cash doesn’t survive rebirth. Spend it all on eggs before you reset. Even if you hatch garbage, at least you tried.

Rebirth vs No Rebirth Comparison

Let’s say you play for 10 hours total.

No Rebirth Path:

Hour 1-3: Building up
Hour 3-6: Slow grind
Hour 6-10: Painful grind, maybe 1 Legendary

With Rebirths:

Hour 1-2: First rebirth
Hour 2-3: Second rebirth
Hour 3-5: Third rebirth
Hour 5-10: Farming with 2x+ multipliers, multiple Legendaries

The rebirth path wins every time. The temporary setback is worth the permanent gains.

Advanced: Rebirth Rushing

Some players optimize for rebirth speed. The strategy:

Meet minimum requirements only
Rebirth immediately
Rush to next rebirth
Repeat until rebirth 5
Then slow down and build properly

This works but it’s stressful. You’re constantly resetting with minimal brainrots. I prefer a balanced approach where I build a bit before each rebirth.