r/whatsthisfish↗
What's this Fish? Identify fish from photos or videos.
60k subscribers131 posts / mo in Sep 2026122 authors / mosince 2012
r/whatsthisfish has 60k members (+29% over the last 12 months). It gets about 131 posts a month from 122 people. Top topics: Fish Identification, Fish Identification Help and Identify Fish.
When to post on r/whatsthisfish
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How r/whatsthisfish has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/whatsthisfish
Top topics
Share of the subreddit's posts
- Fish Identification9.0%
- Fish Identification Help6.6%
- Identify Fish5.2%
- Beach Finds3.3%
- Fish Identification2.2%
Brands people mention
Most-mentioned brands and sites, last 12 months
- iNaturalist
- Smithsonian Institution
- Planetcatfish
- Wikimedia
Everything else about r/whatsthisfish
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research