Yechiel Kuperman, marine biologist and author

Yechiel's Fishery Farm World

Welcome to Yechiel's Fishery Farm — a funny, dyslexia-friendly book world where kids meet cranky guppies, dramatic crabs, opinionated biofilters, and real fish biology disguised as adventure.

Discover our funny fishery farm books for kids and STEM books for children that are currently in publication, and get a sneak peek at what's coming soon.

The Complete George Series

In Publication
The Water Has Opinions — Front Cover
The Water Has Opinions — Back Cover

Book 1

The Water Has Opinions

George the guppy has opinions. About water temperature. About his neighbor's rasping mouth on the back wall. About mornings in general. This morning, however, George has woken up somewhere that is not his tank, soaking in water that tastes of pennies and old rain and what he can only describe as wrong. Somewhere, something has gone badly sideways. George intends to find out what. He is not, for the record, cranky. He is displaced. There is a difference.

Where to Buy →
In Publication
George and the Mosquito Patrol — Front Cover
George and the Mosquito Patrol — Back Cover

Book 2

George and the Mosquito Patrol

George's new job is simple. Find mosquito larvae. Eat mosquito larvae. Save the bog from becoming a flying, buzzing nightmare. It would be the perfect job if not for one small complication. A celebrity. While George works quietly below the surface, an archerfish becomes the most admired fish in the bog by shooting insects out of the air. The crowds love him. The applause grows. And George begins to feel something he doesn't entirely like. Something prickly. Something cranky. Something that might be much harder to swallow than a mosquito larva.

Where to Buy →
In Publication
George Meets the Salt Line — Front Cover
George Meets the Salt Line — Back Cover

Book 3

George Meets the Salt Line

Water has a secret. If you add salt to one end of a tank and fresh water to the other, and forget to stir — the two layers do not mix. They sit, one on top of the other, with a sharp invisible wall between them. The wall has a name: the salt line. George the Cranky Guppy is about to find out what it feels like to cross one by accident. His colors will tell you exactly how that goes. A mistake was made. It was not his. That, unfortunately, does not matter to the water.

Where to Buy →
Coming Soon
The Fizzy Bog Mystery — Front Cover
The Fizzy Bog Mystery — Back Cover

Book 4

The Fizzy Bog Mystery

George the Cranky Guppy has, until this morning, had the bog running exactly as a bog ought to run: quietly, efficiently, and without too many surprises. Then something approximately the size of an eyelash swam directly into his face and asked what's that. There are hundreds of them. They are in his patrol patch. One of them is now following him. What exactly is Yechiel preparing in that covered tank — and why has he stopped drinking tea?

Get notified when this releases:

Coming Soon
George Finds His Water — Front Cover
George Finds His Water — Back Cover

Book 5

George Finds His Water

George the Cranky Guppy has spent five summers becoming, against his considerable better judgment, the most useful fish in the most complicated water on Yechiel's Fishery Farm. He has earned his patrol. He has earned his slow road. He has earned, arguably, a rest. So the kind old man has built him a perfect tank. Freshwater. Planted. Still. Beautiful. George's fan-tail now has to vote. And a five-year-old with a cockatiel on his shoulder has just arrived with a question nobody thought to ask.

Get notified when this releases:

The Complete Plecy Series

Coming Soon
Queen Tetra's Decree — Front Cover
Queen Tetra's Decree — Back Cover

Book 6

Queen Tetra's Decree

The Greenhouse gets a new ruler, and George is not impressed. An illustrated chapter book for curious kids ages 7–12 about leadership, tropical environments, and empathy.

Get notified when this releases:

Coming Soon
The Great Algae Bloom — Front Cover
The Great Algae Bloom — Back Cover

Book 7

The Great Algae Bloom

Green water everywhere! Can the bottom-feeders eat it fast enough? A marine biology book for kids that teaches the delicate balance of ecosystems and photosynthesis.

Get notified when this releases:

Coming Soon
Mystery of the Salt Wing — Front Cover
Mystery of the Salt Wing — Back Cover

Book 8

Mystery of the Salt Wing

A spooky shadow appears in the marine aquaria. A funny fish story for kids blending marine science, observation skills, and conquering fears of the unknown.

Get notified when this releases:

Coming Soon
Quarantine Commotion — Front Cover
Quarantine Commotion — Back Cover

Book 9

Quarantine Commotion

New arrivals bring wild tales from the ocean. An educational STEM book for children covering quarantine protocols, disease prevention, and welcoming strangers.

Get notified when this releases:

Coming Soon
The Fishery Festival — Front Cover
The Fishery Festival — Back Cover

Book 10

The Fishery Festival

All zones must work together for the annual water change. The epic conclusion to the George series, celebrating marine biology, community, and finding your place in the world.

Get notified when this releases: