Active

r/koi

A place to ask about Koi, show off your Koi, etc.

Subscribers

36,710

Created

July 21, 2009

17 years ago

View on Reddit
RedPulse insight

How to think about r/koi

The community is dedicated to Koi fish enthusiasts, providing a space for members to ask questions, share experiences, and showcase their Koi. It stands out for its focus on the care, breeding, and aesthetics of Koi, along with discussions about pond setups and environmental factors affecting these fish. Members often share visuals of their Koi, fostering a visually rich environment that celebrates this ornamental fish.

Confidence 4/5

  • Audience

    Participants in this community are primarily Koi fish owners and hobbyists, often ranging from casual keepers to serious breeders. The demographic is diverse, including both younger and older individuals who share a passion for aquatics. Members are generally eager to learn, share knowledge, and connect over their mutual interest in Koi and pond management, creating a friendly and supportive atmosphere.

  • Posting culture

    The posting culture emphasizes high-quality images and informative content, with successful posts often featuring detailed questions or stunning visuals of Koi. Members appreciate well-researched advice and personal anecdotes about Koi care. Posts that lack depth or are overly promotional tend to receive downvotes, while engagement is frequent, with members actively responding to queries and sharing insights.

  • Brand engagement notes

    Brands looking to engage with this community should focus on providing value rather than overt promotion. Sharing educational content about Koi care, pond maintenance, or innovative products can resonate well. Authenticity is crucial; members are wary of blatant advertising. Collaborations with knowledgeable figures in the community or sponsoring informative posts can foster goodwill. Brands should avoid aggressive marketing tactics and instead aim for a supportive, community-oriented approach.

Top keywords

What r/koi talks about

Weighted by how often each term appears in posts and comments, relative to baseline frequency. The largest words are the strongest signals of community focus.

aeration4ftswampyabrasion🐠muttsblueishparentagedartingpolycarbonatebehavior:20cmhasslederuptinggratefullyunsightlystockysievehydrangeasunblockin-home60€shingleterrapinexperience;move-inroutine:erraticallyforeclosureaggresivemuggy626pondflappy3ftgalvanized393admixturedorsalkoimabypondsagressionfiltrationcreeksminkplecospouts379nettedhuddledmore;7-liliesnitritequarantinedplumbwobblingdaisieswetsuit

External signals

Where the community looks

Top external domains linked from posts and comments — a quick read on the sources of truth this audience trusts.

Top contributors

Who shapes the conversation

The most active and most-upvoted posters and commenters in this community. Useful when planning outreach or studying a community's tastemakers.

Top posters

By post count

By votes

Top commenters

By comment count

By votes

Similar communities

Where this audience also spends time

Topic-adjacent communities surfaced from Reddit's own related subreddit signal.

FAQ

r/koi — frequently asked questions

Quick facts about this subreddit's size, history, focus, and related communities.

How many subscribers does r/koi have?

r/koi has approximately 36,710 subscribers as of May 27, 2026.

When was r/koi created?

r/koi was created on July 21, 2009 (17 years ago).

What is r/koi about?

The community is dedicated to Koi fish enthusiasts, providing a space for members to ask questions, share experiences, and showcase their Koi. It stands out for its focus on the care, breeding, and aesthetics of Koi, along with discussions about pond setups and environmental factors affecting these fish. Members often share visuals of their Koi, fostering a visually rich env…

What subreddits are similar to r/koi?

Communities similar to r/koi include r/ponds, r/goldfish, r/cichlid, r/fish, r/aquaswap.

Who are the most active posters on r/koi?

The most frequent posters on r/koi include u/[deleted], u/AkiraG, u/BrinkleyPT.

Ready to engage on r/koi?

Authentic engagement, not spam.

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