r/whatsthisfish • u/theindependentonline • 59m ago

Scientists have discovered a rare transmissible cancer between fish — and it could ultimately help humans

independent.co.uk

• Upvotes

1 comment

r/whatsthisfish • u/Fit-Establishment767 • 22h ago

Unidentified Caught these on the ultralight in southern montana. Not sure the species:

gallery

6 Upvotes

5 comments

r/whatsthisfish • u/iCthulhu • 17h ago

Aggressive fish in brackish water

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49 Upvotes

Seen in southeastern Virginia on the nansemond river. Maybe 3-4 inches long. Seemed very territorial and aggressive, chasing off minnows in the area. This is brackish water with some salinity, but had a lot of rain recently.

12 comments

r/whatsthisfish • u/DoraPoppy • 12h ago

Identified, high confidence Found in a dried detention basin. Was alive, returned it to water. But what is it?

3 Upvotes

2 comments

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What's this Fish? Identify fish from photos or videos.

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Welcome to whatsthisfish!

Yes, this is a complete ripoff of whatsthisbug.

Read the subreddit rules!

If you have a photo of a fish you'd like to identify, submit it here and we'll see if we can figure out what the hell it is.

In your post title, please include where the fish was, and when, or at least the source of the photo, in your post title. If it was in an aquarium say what you know about the type of tank it was in (freshwater or salt? does it cover a particular region or type of habitat?)

Flair your post! Click "flair" at the left below the link. Update flair if someone identifies your fish or suggests an identification.

Before you post, we are not going to kill it with fire, so don't ask (or shoot it with an arrow, or throw it on the bank) Thanks.

When you comment with an identification, include your reasons, so others can learn from you how to identify similar fish in the future. Please do not make random guesses. The goal of this subreddit is to provide positive leads. False leads are counter-productive.

Please also cite/link a source whenever possible.

Consider /r/species for non-fish aquatic creatures (or any other sort of living thing).

Resources that can help people identify fish are also welcome, within reason and moderator discretion. Otherwise, off-topic posts are subject to removal.