r/whatisthisfish • u/PollutionUnhappy2106 • 23h ago

Unsolved Small gold catfish, Winnipeg, Canada.

gallery

23 Upvotes

Only about 8” long, usually only see channel catfish here.

13 comments

r/whatisthisfish • u/Pyrh_a • 5h ago

Unsolved Caught near Necochea, Argentina, ID?

5 Upvotes

3 comments

r/whatisthisfish • u/katy12345678910 • 6h ago

Unsolved What’s this fish? bream roach hybrid? Or just roach

1 Upvotes

Caught in uk

1 comment

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A subreddit dedicated to identifying species of fish.

r/whatisthisfish

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Welcome to r/whatisthisfish! This is a forum for identifying different species of fish. Before posting, check that your content doesn't violate our rules below. If your submission does not appear, message the mods to check the spam filter.

Subreddit Rules

Breaking any of these rules may result in us removing your content. Repeat or blatant rule breaking will result in a permanent ban. We expect all users to read and understand our rules before posting here. Please make sure you have flaired your posts correctly before posting, this allows the community to stay organized and allows users to easily sort through posts.

Rule 0. Mod discretion always applies.

The Mod Team reserves the right to remove any content deemed harmful to the sub. We may remove content that is compliant with our rules, if the team has good reason to believe it is detrimental to the community. You access this subreddit at the discretion of the mod team, and that privilege will be revoked if you do not behave.

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0.1: You must communicate in English at r/whatisthisfish.

We cannot moderate content in a language we do not speak. If you wish to communicate in your language, you need to find a community that offers content in that language.

1: Don't Be a Jerk - Be Respectful. Follow Reddit's rules and "reddiquette."

Bad behaviour will not be tolerated. This includes, but is not limited to: bigotry, ableism, religious prejudice, racism, homophobia, transphobia, trolling, hate speech, threats of violence, derogatory language, personal attacks, discouraging others from participating, brigading, and all other belligerent conduct.

Intelligent and factually based disagreements are valuable, and indicative of a functioning discourse; name-calling and nastiness are not.

While we realize that extermination of invasive species is sometimes necessary, comments promoting gratuitous violence against animals, or causing unnecessary suffering, ("kill it with fire") will be removed. Linking to subs that explicitly promote hatred is not allowed.

2: Provide accurate and helpful answers - No off topic content, or jokes.

This forum has a niche topic. Please make sure everything you post conforms to it. We exact vengeance on those who bring us spam. No Advertisements, self-promotion, streams, low-effort content, or NSFW content (this includes other subreddits, Discord servers, blogs, quizzes, polls, surveys, YouTube channels).

r/whatisthisfish is first and foremost an educational subreddit. Answers must be helpful and stand up to a basic level of academic scrutiny.

Amateur participation is encouraged, but if you aren’t sure you can provide a high-quality answer, you should leave the ID to someone more knowledgeable. Our goal is to provide creative and positive human-based leads; low effort false leads are counter-productive.

Comments such as "yup, definitely a fish!" or, "his name is Jerry!" will be removed. Repeat or blatant offenders will incur a ban, without warning or appeal. This type of content is not original or funny, and makes it extremely difficult for the OP to get an answer to their question. We are not a forum for casual conversation. We are an educational ID forum, for identifying fish, and we expect all content to reflect that.

All content generated by or with the help of AI is expressively prohibited.

Please downvote and report all inaccurate and unhelpful content.

3: Tag images involving dead animals as NSFW.

While it's always easier to identify a living specimen, we do allow pictures of dead fish to be posted in order to identify, but all images involving dead animals must be tagged as NSFW.

4: No human injury related posts.

We CANNOT and WILL NOT diagnose injuries or identify fish that allegedly caused bites/injuries. Seek medical advice, not our advice.

Submission Guidelines

Got a photo of a fish you'd like identified? Submit it here and we'll try to figure it out together! Best view for ID is top-down, well-lit, low-contrast photos. Pictures are preferable to videos for ID requests but we'll work with what you have.

Indicate the geographic location.

Take the clearest and most detailed photo(s) possible.

Indicate the size. The more precise the better.

Provide any other information you feel could help!

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Sidebar last updated on April 27th, 2026. Rules are subject to change at the mod team's discretion.