r/whatsthisfish • • Dec 02 '17

Where did you see the fish? Put that in the title!

23 Upvotes

Just a reminder, because we've had a lot of posts recently that omit this information. Where was the fish? If you found it in the wild, that's very helpful information, and outside of tropical waters, the time of year can be helpful too. If it was in an aquarium, what sort? Was it a tank of fish from a particular region? Was it fresh water or salt water?

Other useful information can be, what kind of habitat (seagrass, sand, rocky surge, ...)? If you were diving, approximate depth?

But above all, give the location in your post title. Thanks.


r/whatsthisfish • • Jul 23 '26

New rule: Informative title

7 Upvotes

We've had too many titles like "what's this fish?" or "help me identify this". Put useful information in your title, and make it look different from other posts' titles so people can scan the sub and see which post is which.

The actual text of the new rule 4 is:

Do not use a vague generic title like "what is this fish?" or "need help identifying" - we all know what this sub is for. Write a title that either describes the fish, or the circumstances in which you saw it, or the location, or more than one of those. For a resource, say what the resource is and what it's for.


r/whatsthisfish • • 14h ago

New London Ct on my engine bracket

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139 Upvotes

Found in USA in New London Connecticut. Boat is in a Marina on the Thames River about 1/2 mile from the Long Island Sound. Saltwater environment. Found the fish the other day on my outboard engine bracket. About 6” long with sharp teeth. Never seen nor caught anything like this in the area (or in the Northeast)


r/whatsthisfish • • 10h ago

Unidentified I’m completely stumped

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25 Upvotes

My brother found this washed up on the Toronto islands on Lake Ontario and he says it’s roughly 1m long.

I personally can’t think of a single fish from here that looks like this, but I’m frequently wrong so please send help.

Thanks!


r/whatsthisfish • • 7h ago

What’s this fish? Nagbalayon beach, Philippines. Small, black, 2.5in w/ circular side fins

8 Upvotes

Small black fish, 2-3in, was swimming at the shore in a few inches of water next to Bayandati resort. Was in a pair but got separated from partner. Also have a much shorter clip of another, maybe older, pair I saw. They were slightly bigger and their side fins looked a little more reddish. One had a black body the other was a bit grayish.

Edit: im sorry the quality of the video is awful, if anyone is interested in helping me I can make another post w/ screenshots


r/whatsthisfish • • 2d ago

Possible ID(s) suggested Trout or Salmon?

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19 Upvotes

Found a small group of these feeding like lunatics in a deep spot on our local hatchery creek (Issaquah Creek, Issaquah, WA; western Washington State, 10/14/26). They're only about 3-4in and move too fast at the surface to get *good* shots of, but they 'look' like young trout to me, rather than the salmon that are wrapping up their spawn there now. I would like to see if I can get a better handle on the ID from the minds here; thank you in advance.


r/whatsthisfish • • 2d ago

Identified, probably Carpe commune ou amour blanc ? 20,6 kg !

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5 Upvotes

Salut à tous ! 👋

J'ai sorti ce beau poisson de 20,6 kg lors d'une session de pêche de nuit ! 🌙🎣

Au début, j'étais persuadé d'avoir attrapé une carpe commune, mais en regardant de plus près, j'ai un doute, c'est peut etre un croisement !

Vous en pensez quoi ? Carpe commune ou amour blanc ? 👀

Je vous partage aussi les statistiques de ma session sur la photo ! 📊

Location: South of France, freshwater lake. Caught during an overnight fishing session.


r/whatsthisfish • • 2d ago

Possible ID(s) suggested What Sculpin species is this? Guelph Ontario Canada

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12 Upvotes

Is this a mottled or slimy sculpin? I've found mottled sculpin in the area. Going off of i-naturalist, slimy sculpin have not been spotted in guelph. But it looks too different to the other mottled to me, am I crazy????


r/whatsthisfish • • 2d ago

Unidentified What kind of fish did my nephew catch in Destin, FL?

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71 Upvotes

r/whatsthisfish • • 2d ago

Anybody know what this is? Saw it in a lake in Central Oregon

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5 Upvotes

r/whatsthisfish • • 3d ago

Unidentified ID please. North Brisbane River. Eel-tailed Catfish?

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4 Upvotes

Approx 40cm. Stayed in one area, protective. Seemingly building sandy, pebbly base for spawning? Could it be Eel-tailed Catfish? Found in creek, marshy part of South Pine River Bendale 4500.


r/whatsthisfish • • 3d ago

Albino Eel. Has anyone who fishes around Yamba/Clarence River ever seen anything like this? I’ve been trying to identify this bloody thing for nearly 10 years. 😭

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0 Upvotes

r/whatsthisfish • • 4d ago

What is this caught in Madagascar?

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422 Upvotes

Caught north coast of Madagascar. Any ideas?


r/whatsthisfish • • 3d ago

Unidentified What are these store eels?

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17 Upvotes

What are these guys at the asian market? The dont have a species name just labeled as eel

Im in Texas and the asian swamp eel is apparently illegal for anyone to sell here so Im unsure if thats what these guys are.


r/whatsthisfish • • 4d ago

Possible ID(s) suggested Need help IDing some Darters I caught in the Ozarks

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16 Upvotes

1 Orange throat/rainbow?
2 rainbow
3 rainbow?
4 ?
5 ?
6 ?
7 ?
8 ?
9 ?
10 ?
11 ?
12 ?
13 ?
14 ?


r/whatsthisfish • • 4d ago

Can anyone help identify this fish, caught in a creek in Western NC.

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52 Upvotes

r/whatsthisfish • • 4d ago

Possible ID(s) suggested Need some help IDing some fish in I caught in the Ozarks

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15 Upvotes

My guesses
1 ?
2 bleeding shiner
3 bleeding shiner
4 bleeding shiner
5 bleeding shiner
6 bleeding shiner
7 bleeding shiner
8 carmine shiner
9 ozark minnow
10 southern redbelly Dace
11 disjunct studfish
12 blackspotted topminnow
13 Blackstripe topminnow
14 slender mad tom
15 ?
16 ?
17 ?
18 sculpin?
19 sculpin?


r/whatsthisfish • • 5d ago

Unidentified Loon fish help, inland Maine, and bonus… something? Plant?

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30 Upvotes

r/whatsthisfish • • 5d ago

Cichlid in tampa

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23 Upvotes

this was when i didnt have as much knowledge on cichlids and i thought it was just a big mayan cichlid with weird colors, but looking back it doesnt even look like a mayan cichlid at all


r/whatsthisfish • • 5d ago

Unidentified Cormie gobbling this up off the coast of Maine

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6 Upvotes

r/whatsthisfish • • 5d ago

Unidentified Caught these 5 in west central Ohio on a small creek.

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12 Upvotes

New to fishing but caught these all on my fly rod in a small creek in Ohio. Please help!


r/whatsthisfish • • 5d ago

Unidentified NC intracoastal from 20yrs ago

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6 Upvotes

Found a picture from almost 20yrs ago. Couldn’t figure out what this fish is? From North Carolina, intracoastal waterway


r/whatsthisfish • • 6d ago

Unidentified Found near Shinnecock inlet in Hampton Bays, NY.

64 Upvotes

Apologies for the bad focus on the video


r/whatsthisfish • • 7d ago

Believe it’s a brown trout variant I caught out of a swimming hole(shouldn’t be hatchery) in northern California. Why does it have purple hues ?

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210 Upvotes

r/whatsthisfish • • 6d ago

Unidentified Caught in Eastern Tennessee

2 Upvotes

Just caught this guy. Never seen any fish like it. It kind of looks like a musky but not quite. Any ideas?