FishPond Just Launched on Steam

FishPond launched on Steam on Jul 5, 2026 from solo developer Evan Guthrie at $3.99, a casual, indie, simulation release for Windows and Linux. Steam’s own description reads: “Build a living pond where every fish has a unique genetic code. Breed for rare traits, balance oxygen and hunger, unlock new species, and watch your ecosystem compose its own soundtrack in real time. Part sim, part idle game, part science experiment gone beautifully wrong.” The Steam listing confirms ships with single-player modes, plus full controller support and Steam Achievements, with 30 languages supported at launch.

FishPond — Key Facts

From the Steam listing: Build a living pond where every fish has a unique genetic code. Breed for rare traits, balance oxygen and hunger, unlock new species, and watch your ecosystem compose its own soundtrack in real time. Part sim, part idle game, part science experiment gone beautifully wrong.

• Developer: Evan Guthrie (solo — also the publisher)
• Genres: Casual, Indie, Simulation
• Platforms: Windows, Linux
• Languages: English, French, Italian, German, Spanish – Spain, Arabic, Bulgarian, Czech, Danish, Dutch, Finnish, Greek, Hungarian, Indonesian, Japanese, Korean, Norwegian, Polish, Portuguese – Brazil, Portuguese – Portugal, Romanian, Russian, Simplified Chinese, Spanish – Latin America, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
• Release: Jul 5, 2026
• Price: $3.99
• Steam features: Single-player campaign, Full controller support, Steam Achievements

FishPond — Watch the Trailer

About FishPond: Gameplay & Details

Every fish in your pond is born with a 12-trait genome — speed, size, hunger, fertility, color, and more — all inherited from its parents and twisted by mutation. Two fast parents might produce something faster. Or something weird. That’s the fun part.

Grow a real ecosystem, not a screensaver. Stock your pond with six species, each with its own personality. Minnows school in nervous swarms. Bass lurk near structures and ambush anything that swims too close. Crawfish scuttle along the bottom eating whatever died. Every fish makes its own decisions — hunting, fleeing, mating, resting — based on what’s actually happening around it.

Breed with purpose (or reckless curiosity). Use the Genetic Splicer and Sampler to cross-breed fish and chase down rare genetic variants, from "Quickfin" speedsters to the elusive "Perfect Specimen." Save your best genetics to a library, clone them, splice them, and push your lineages further. Over 50 named variants are waiting to be discovered in the Trophy Room.

Keep the balance or watch it collapse. Oxygen is finite. Hunger is relentless. Overpopulate and your pond suffocates. Neglect your scavengers and carcasses pile up. The Harmony system tracks everything — diversity, stability, starvation, extinction — and gates your progression behind it. A thriving pond earns more money, unlocks new species, and opens up powerful tools. A dying one spirals fast.

Your pond writes its own music. A built-in 32-bit audio engine generates the entire soundtrack in real time. Each species contributes its own instruments — minnows bring shimmering bell chimes, bass lay down deep predatory lines, salmon add flowing pads. As populations grow, the tempo climbs. Switch between orchestral, funk, and electronic modes and listen to your ecosystem play itself.

Automate, optimize, expand. Hire fishermen with configurable targeting logic to harvest your pond automatically. Upgrade your auto-feeders, expand your pond to 7x its starting size, and run experiments that reward both stability and controlled chaos — yes, there’s a mission for causing an extinction on purpose.

Key Features: 12-trait genetic inheritance with mutation, specialization, and visual variation 6 species with distinct AI behaviors, food chains, and ecological roles Real-time procedural music that reacts to your pond’s population 50+ discoverable genetic variants across four rarity tiers Harmony-driven progression — balance your ecosystem to unlock everything

Oxygen management, predator/prey dynamics, and carcass cleanup Automated fishermen with targeting modes and safety buffers Experiments that challenge you to grow, crash, and rebuild Time scaling from 0.1x slow-motion to 3.0x fast-forward Fish cages for isolating breeding lineages Expandable pond up to 7x screen size

FishPond — Screenshots

How You Play FishPond

The core loop combines fish breeding with ecosystem management and trait optimization across the six-species catalog. Players observe their pond fish, identify individuals with desirable trait combinations, and encourage selective breeding to develop increasingly refined offspring lines. Each fish carries the full 12-trait genome that determines its ecological role, and players who understand the trait interactions can build ecosystems that self-sustain or optimize for specific outcomes.

The mutation system introduces genuine unpredictability into the breeding pipeline. Rather than pure deterministic trait inheritance where children exactly average their parents’ values, FishPond includes mutation events that produce unexpected trait combinations — sometimes beneficial, sometimes catastrophic, always surprising. The mutation unpredictability distinguishes FishPond from pure optimization simulations by preserving the emergent-discovery satisfaction that genetic simulation naturally supports.

The Ecosystem Balance and the Idle Design

The idle-simulation framing lets the ecosystem develop across real time. Rather than requiring constant player attention, FishPond runs as a self-perpetuating simulation where fish reproduce, age, and interact according to their genetic programming while the player attends to other tasks. Players return to find their pond has evolved through many generations, and the compound generational effects create the emergent narratives that memorable genetic sims produce.

Where It Sits in the Genetic Simulation Landscape

The nearest touchstones are Aquarium Designer for the pond-management simulation tradition, Species: Artificial Life Real Evolution for the genetic-simulation depth framework, and the broader category of digital ecosystem games that has surfaced across the past decade. FishPond differs from those benchmarks by centring the 12-trait genome depth with editorial commitment beyond superficial breeding mechanics and by combining the genetic simulation with idle-game pacing rather than active-management focus.

The Casual, Indie, and Simulation genre labels indicate the design’s reach. The Single-player focus is the right choice for a meditative ecosystem simulation where multiplayer coordination would fundamentally alter the personal-ecosystem experience. Evan Guthrie has stayed disciplined about the scope, focusing on the pond ecosystem core rather than expanding into elaborate progression trees or narrative content that would dilute the simulation commitment.

The Real-Time Soundtrack and the Emergent Design

The design lineage includes generative music traditions where the algorithm produces the composition rather than the human composer. Players who commit to their pond long-term hear an ever-evolving soundtrack that reflects their specific ecosystem history, and that personalized audio experience distinguishes FishPond from generic simulation games with looping background music.

The Solo-Developer Achievement and the Long-Term Community Value

Evan Guthrie as solo developer has shipped a complete genetic simulation with 12-trait genome depth, six-species roster, ecosystem balance mechanics, generative soundtrack, and enough emergent complexity to sustain long-form play. Most solo-dev simulation attempts ship with dramatically smaller scope; FishPond’s completeness at launch represents genuine editorial ambition rare in the indie simulation category. Genetic simulation games with emergent complexity build dedicated communities around shared discovery of trait combinations and ecosystem strategies, and FishPond is well positioned for that formation given the 12-trait system depth. Players share optimal breeding lineages, ecosystem screenshots, and rare mutation discoveries across community discussion channels, extending effective play value well beyond the base simulation runtime and creating the compound engagement that sustains genetic simulation communities across many months of dedicated pond development.

Buy or Skip — FishPond

Yes if genetic simulation games are a comfort genre and you appreciate solo-developer editorial commitment. Yes if you enjoyed Species: Artificial Life, Aquarium Designer, or contemporary idle-simulation releases and want another entry with distinctive 12-trait genome depth. Yes if generative soundtrack ecosystems appeal to you as emergent design. Less yes if you prefer active-management simulations or if idle-game pacing feels too slow. For the simulation audience at deep-budget pricing, this is a confident recommendation. Evan Guthrie has earned the install for the genre faithful with editorial commitment that solo-team indie work occasionally achieves at this scale.

— Rynx

FishPond Verdict: 8/10 and a Genuine Recommendation

FishPond lands in that specific slice of the market where genre knowledge shapes the experience. Players deeply invested in this space will recognize the care in execution.

Steam store page reference: FishPond on Steam. The Steam page is the authoritative source for pricing details.

For player-driven insight into FishPond, visit the FishPond Steam Community Hub for the community section with player reviews and screenshots.

FishPond on Steam — Live Data

Live FishPond data from the Steam storefront: pricing, reviews, and screenshot preview in the widget below.

For deeper analytics on FishPond, the FishPond SteamDB profile carries price history, player counts, and store analytics. Historical pricing details and reception data are covered on the SteamDB listing.

At a glance — verified Steam listing

Developer	Evan Guthrie
Publisher	Evan Guthrie
Release date	Jul 5, 2026
Price	$3.99 — verified 10 September 2026
Platforms	Windows, Linux
Genres	Casual, Indie, Simulation
Steam features	Single-player, Steam Achievements, Full controller support, Camera Comfort, Custom Volume Controls, Keyboard Only Option
Languages	English, French, Italian, German, Spanish – Spain, Arabic and 24 more
Store screenshots	6

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