How One Fruit Fly’s Brain Spawned Three Tokens in Two Weeks

I’m Louise Lee. This one is about a topic that walked out of a laboratory, and the three tokens it dragged along with it.

In September 2026, a real scientific result made the fruit fly brain the hottest subject in crypto. Within two weeks, the same topic lit up three different tokens in turn, then collapsed three times in turn — each one ran up to a market cap in the tens of millions, and all three now sit back down in the hundreds of thousands, or less.

The three are FLYBRAIN, on a US chain, and two BNB Chain tokens: NECTAR and “Immortal Fruit Fly.” I’ll take them one at a time, but first, the thing that made all of it catch fire.

The origin is a real scientific result

On September 3, 2026, Google Research, the Janelia campus of the Howard Hughes Medical Institute, and a team in Cambridge, UK, published a paper together in Cell, one of the top journals in the field.

What they did was map out the entire nervous system of a single adult male fruit fly — 166,700 neurons and more than 100 million connections, traced one by one out of electron microscope images. It was the first time anyone had traced the full “senses in, movement out” circuit in an adult animal.

The point is this: it really happened. Nobody made it up. Crypto usually builds a meme by inventing a story and getting people to believe it. This time it ran the other way. The thing happened in the real world first, and crypto picked it up and turned it into tokens.

Three days later, someone plugged the map into a video game

On September 6, three days after the paper went live, a software engineer wired the public fruit fly brain data into the old game DOOM — using the activity of real neurons to control a character on screen. He published the code, and anyone could go online and watch it. Super Mario 64 and Beat Saber followed.

With that, the fruit fly brain went from a paper to a meme anyone could play with. It became a science story first, a toy second, and only after that did crypto take an interest.

Token one: FLYBRAIN, on a US chain

The account that moved first was @fruitflydev. Its pitch: simulate a “living fruit fly brain” on a computer using real fly brain data, then feed other people’s buy and sell orders into it as sensory input. Someone buys, and it tastes something sweet; someone sells, and it tastes something bitter. The virtual fly places its own orders by fixed rules in response to those inputs, and the token is issued out of what the pitch called the fly’s own wallet.

On September 10, a token named FLYBRAIN was born on Robinhood Chain, a chain the trading platform runs itself.

The real spike came the next day. Marc Andreessen, co-founder of a16z, followed its official account. One follow, nothing more. The market immediately read it as “a major fund may be watching this,” the price shot up within the hour, and the market cap topped out at $54.61 million.

Then came the drop: 60% gone inside six hours, a brief bounce the next day, and then a slide that has not stopped.

(One aside: media reports of the gain don’t agree — some say 670x, some say 1,500%, some say 99,000%. That isn’t a contradiction. Each one started counting from a different price.)

Tokens two and three: NECTAR and Immortal Fruit Fly on BNB Chain

On September 15, Binance founder CZ posted one line on X: “If someone builds an ‘immortal fruit fly’ on BNB Chain, that would be really cool.”

It took an hour to land. A token called NECTAR appeared on BNB Chain right away, up 367x in an hour, with a market cap of $3.38 million that day. Another token, “Immortal Fruit Fly,” launched alongside it, and 26 hours later its market cap briefly hit $8 million.

Note that these two are the same topic done over again. The scientists did one piece of work, CZ endorsed neither token, and the market only wants whatever is new — money does not go back to the one that already fell.

Why it caught fire: four forces stacked together

It is not something you can explain away with “it was trending.” Four forces piled on top of each other to make this run.

First, reality handed over a true story that wasn’t finished yet. A brain map just out in a top journal, a pile of neurons you can watch online, a fly playing a video game — all of it really happened, all of it is checkable, and all of it is strange and fun enough that anyone would share it.

Second, it got packaged as a character. A fly that places its own orders, that has a wallet, that has feelings (sweet, bitter), with “immortal” in its name. Once an abstract scientific result becomes a character, the audience that can follow it and wants to pass it on jumps from researchers to ordinary players.

Third, it landed on a production line that was already running. Robinhood Chain had just spent early September practising on stock memes — turning tickers like AMC into tokens — and the market had already learned the routine: any fresh material can be minted into a token, pumped fast, and dumped fast. FLYBRAIN only swapped the material from stocks to neuroscience. The playbook was unchanged.

Fourth, the famous names and the press coverage became free advertising. Andreessen followed and said nothing. CZ floated an idea. But every outlet covered it — the intent was to chase the trend and add a risk warning, and the actual effect was to put the token names in front of far more people. A famous person spends a second, crypto trades it for a week, and the gap between the two is the price.

All of it then rests on a very thin structure. These tokens have a supply of 1 billion, no presale, and very little money in the pool (FLYBRAIN’s main pool holds about $45,000 even today). Thin liquidity cuts both ways: the same amount of money can push the price far up, and it can push it just as far down. That is why they rise fast and fall just as fast.

Looking back today: where the three tokens stand

Here is where all three sit today, October 13, 2026, listed separately from their own all-time highs.

FLYBRAIN: all-time high of $0.04742 (September 11), peak market cap of roughly $47 million to $54.61 million. It trades near $0.0003 now, with a market cap of $290,000 to $300,000 — about 99% below the peak. Around 7,700 holder addresses.

NECTAR: peak market cap of about $3.38 million on the day, and about $18,000** now, down more than 99%.

Immortal Fruit Fly: peak market cap of about 8 million, and 160,000 to $170,000 now, down about 98%.

A warning: Immortal Fruit Fly is not the only token on BNB Chain with that name. Another contract, 0xf545af97…7777, carries the same Chinese name and was created an hour and a half before the one I’ve been describing. Check the contract address character by character before you buy. Do not search by name.

All three are down more than 98% from their peaks. Attention that once ran to hundreds of millions of dollars is now propped up by a few hundred thousand. The story is told, the price has come back down, and what’s left is a few lines on-chain proving they were here.

A closing note

What I keep coming back to is the gap between these two things sitting side by side: hundreds of scientists working for over a decade on one real map of a brain, against a few hundred thousand dollars of market cap run up and knocked down inside two weeks.

The fly they called “immortal” didn’t even last two weeks. The brain map from the lab is still there and will keep being used for research. The three contracts on the crypto side will probably be forgotten within a few months. Telling apart what is real from what merely caught fire off something real is the one thing I most wanted a reader to take from this.

(This is a research note, not investment advice. Meme coins are extremely volatile and can go to zero in a very short time. Only put in money you can afford to lose entirely, and verify the contract address yourself.)

About me, and Tronsell.io

I’m Louise Lee, a researcher at Tronsell.io, where I follow the cost structure of on-chain assets and shifts in narrative. Tronsell.io is an energy and bandwidth service on TRON: a self-operated energy pool with roughly 400 million TRX staked, supplying about 3.7 billion energy and 35 million bandwidth, serving more than 10 institutional clients.

Provenance fact card

(Data as of October 13, 2026; all-time highs and current prices are different points in time and are labelled separately.)

Item	FLYBRAIN	NECTAR	Immortal Fruit Fly
Chain	Robinhood Chain (ID 4663, an Arbitrum Orbit L2)	BNB Smart Chain	BNB Smart Chain
Contract	0x4Eb990547BCe4a982432CA88Cf5fae7EED1A2d35	0x1f88980913b5973bB18643c4f7663708ab9c7777	0x2b90BB9683383B6A1440e116309Ba0187ef67777
Main pool created	2026-09-10 18:30 UTC	2026-09-13 07:23 UTC	2026-09-15 05:49 UTC
Supply	1 billion (100% circulating)	1 billion	1 billion
Main quote asset	GOOGL (tokenised Google stock)	GOOGLB	GOOGLB
All-time high	Price $0.04742 (2026-09-11, consistent across Binance and CoinMarketCap); market cap about $47.42 million, with media reporting a peak of $54.61 million; another source reports a peak price of $0.02929 / FDV $28.9 million	Market cap climbing $1.61M → $2.76M → $3.38M (2026-09-15, taking the highest at $3.38M)	About $8 million market cap (2026-09-16)
Current price / market cap	About $0.0003 / $290,000–$300,000	About $0.0000248 / about $18,000	About 0.00016–0.00017 / 160,000–170,000
Current liquidity	Main pool about $45,000 (about $52,000 across all pools)	About 18,000–22,000	Main pool about $54,000 (about $55,000 across all pools)
24h volume	About 5,000–10,000	About $1,200	About 25,000–26,000
Holder addresses	About 7,700–7,940	Public data insufficient, not independently verified	About 6,500–8,000
Drawdown from peak	About -99.4%	More than -99%	About -98%
Top-10 concentration	About 29.2% (contract and burn addresses excluded)	Public data insufficient	Public data insufficient
Same-name copy	None	None	A second contract, 0xf545af97ea5405f6eb4b396b571338ef15357777, shares the name — verify before buying

Sources

1. The science (the fruit fly brain map)

1. Cell paper, “Sexual dimorphism in the complete connectome of the Drosophila male central nervous system,” September 3, 2026
2. Google Research blog, “A connectomics milestone: Mapping the complete male fruit fly brain,” September 9, 2026
3. HHMI Janelia and Neuroscience News technical notes on MaleCNS v1.0: 166,691 proofread neurons, around 125 million synapses, 11,691 cell types; covering the brain, both optic lobes and the ventral nerve cord; seven imaging instruments over 13 months, about 160 TB of data, and about 44 person-years of proofreading
4. Earlier work: the FlyWire consortium’s complete adult female brain connectome in Nature, October 2024 (139,255 neurons, around 54.5 million synapses)
5. Engineering offshoot: engineer Alex Wormas published an experiment on September 6, 2026 driving DOOM with MaleCNS data, with the code released on GitHub; Super Mario 64, Beat Saber and others followed

2. On-chain events (FLYBRAIN / Robinhood Chain)

1. BlockBeats: on September 11, flybrain’s market cap passed $25 million (up 302% within an hour); a16z co-founder Marc Andreessen followed its official X account
2. SoSoValue / Foresight News / PANews: the same day, market cap passed $45 million, hitting an intraday high of $54.61 million before falling back to $33.61 million (a more than 90x gain in six hours)
3. Gate / Foresight News: intraday gain figures differ — Gate recorded “over 670x,” Bitrue recorded “over 99,000%,” and some outlets recorded “1,500%,” each from a different starting point; Bitrue separately reported a peak price of $0.02929 and an FDV of about $28.9 million
4. BlockBeats / CoinEx: on September 11, market cap fell from a $55 million peak by more than 60% within six hours, to $12 million
5. The project’s own account, @fruitflydev, on its mechanism: 165,122 neurons and 10,228,000 synapses; neurons run on a leaky integrate-and-fire model (resting -52 mV, threshold -45 mV, time constant 20 ms); buys and sells mapped to sweet, bitter, dopamine and shadow; token created 2026-09-10 18:23 UTC; roughly $106,600 in creator fees generated over six hours
6. Ourbit / Gate announcements: FLYBRAIN contract 0x4Eb990547BCe4a982432CA88Cf5fae7EED1A2d35, on Robinhood Chain

3. On-chain events (NECTAR / Immortal Fruit Fly / BNB Chain)

1. BlockBeats: on September 15, CZ posted that he looked forward to seeing someone build an immortal fruit fly on BSC; YZi Labs member Siyuan proposed earlier that day that BNB Chain could serve as a “permanent layer for brain state”
2. BlockBeats: NECTAR rose 367x within an hour to a $1.61 million market cap; it then climbed to $2.76 million (TechFlow) and $3.38 million (BlockBeats) the same day, rolling readings at different points within the same hour; the dev described using FlyWire connectome data to drive buyback-and-burn
3. ME News / MyToken: BORT also spiked more than 4x in the same period, to $3.67 million
4. BlockBeats / CoinEx: Immortal Fruit Fly passed an $8 million market cap 26 hours after launch, with $10.2 million in 24-hour volume
5. Gate token-listing announcement: NECTAR contract 0x1f88980913b5973bB18643c4f7663708ab9c7777; fruit fly (Immortal Fruit Fly) contract 0x2b90BB9683383B6A1440e116309Ba0187ef67777

4. Market data

1. DexScreener: price, market cap, liquidity, 24-hour volume and main pool creation time for all three contracts (as of 2026-10-13)
2. GeckoTerminal: pools, supply and reserves for NECTAR, the fruit fly token and FLYBRAIN
3. Binance / CoinMarketCap / Bitget / WEEX: FLYBRAIN all-time high of $0.0474215 (2026-09-11), about 7,720–7,730 holder addresses, 1 billion total supply, CertiK rating around 3.5–3.6
4. HoodLock: FLYBRAIN recorded about 7,940 holders on 2026-10-02, with the top ten ordinary wallets holding 29.22% (contract and burn addresses excluded); contract source verified
5. BlockBeats / CoinEx: Immortal Fruit Fly passed an $8 million market cap 26 hours after launch, with $10.2 million in 24-hour volume (historical peak data)