/r/whatsthisfish

Photograph via snooOG

Welcome to whatsthisfish!

Yes, this is a complete ripoff of whatsthisbug.

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.

/r/whatsthisfish

36,353 Subscribers

3

Snake like fish from the amazon, seen on River Monsters

https://preview.redd.it/oc8w6jm1fdge1.png?width=1172&format=png&auto=webp&s=8d0820c3bc0e1aac8d77ad17cd47b8a4e5f137d8

https://preview.redd.it/ilo0lse2fdge1.png?width=1211&format=png&auto=webp&s=9e739c53bf21516d85024745a362d1051b4321e0

https://preview.redd.it/jzi5pj43fdge1.png?width=1382&format=png&auto=webp&s=bd99023029c1b640c807ff5eba3e198741d76378

Would appreciate if anyone knew what fish this could be, or even the family name. Seen on river monsters, eating fish carcasses. Apparently the locals call it "Musum" (couldn´t find anything on the internet about that). The smaller end is the head

11 Comments
2025/01/31
18:17 UTC

27

What fish is this? Found in a resturant

12 Comments
2025/01/31
17:59 UTC

8

What fish is this?

Red fish with blue spots, given by someone. Is it good eating? How would you prepare it?

4 Comments
2025/01/31
10:46 UTC

51

Please help me identify this fish

17 Comments
2025/01/30
13:50 UTC

0

Cute fishy I found on Pinterest but I’d like to know what kind it is

6 Comments
2025/01/29
23:45 UTC

25

Sunfish?

I’ve never seen a bream this dark. I love the colors on this lil guy though! Need help identifying!

8 Comments
2025/01/29
06:29 UTC

5

Molly or Platy?

We got this fish from the store today but they didn’t have the labels yet and the guy at the store wasn’t sure.

2 Comments
2025/01/28
21:16 UTC

5

SW Florida, 6-8" long

3 Comments
2025/01/27
22:24 UTC

3

Caesio Varilineata (fusilier)? They were feeding their mouth was wide open and their gills deformed. Location: Balicasag, Panglao, Bohol, Philippines

3 Comments
2025/01/27
13:30 UTC

5

Help identify pls

Hi, I’ve just taken this aquarium off someone’s hands & don’t know what fish this guy is. Bought in the UK if that helps

4 Comments
2025/01/26
17:20 UTC

21

Saw it in someone's aquarium, haven't seen it anywhere else. Has a snout

5 Comments
2025/01/26
16:39 UTC

1

Pyrostremma spinosum?

https://preview.redd.it/ey0x3pqvi9fe1.jpg?width=299&format=pjpg&auto=webp&s=d17dd400df040c9224c60ff2f762b12a792c7f56

https://preview.redd.it/rckuho9wi9fe1.jpg?width=274&format=pjpg&auto=webp&s=9be89113a12677f99833f8232f1bb66b9c78b19d

hi! ive been really unsure of the scientific name of this guy for quite awhile. my best guess is Pyrostremma spinosum, but i am not at all confident in that. https://www.marinespecies.org/aphia.php?p=taxdetails&id=137255#images on the worms page, all the photos for that species name have a red tint and are wayyyy smaller. any leads appreciated

0 Comments
2025/01/26
04:04 UTC

36

Mystery Fish

Ignore my algae bloom, this is a shrimp tank with good parameters and an idiot who left lights and co2 running far to long. These 2 are a mystery and surprise; 3 weeks ago I found fry in my tank after purchasing a handful of new plants both online and from shops. I have no idea what they are- as fry, I thought they may have been guppies as they were both yellow and looked like my female guppy who had moved to another tank just before they appeared ... 3 weeks later they're as big as her- and definitely not guppies. Barbs? Tetra? Goldfish? What are these things? How big are they going to get? They are soon to move out of this tank as I have another tank set for my tropicals to keep them from eating my shrimp fry.... but are they even tropicals???

8 Comments
2025/01/25
21:17 UTC

36

Seen in central Connecticut (freshwater cove) last may/june.

13 Comments
2025/01/25
18:56 UTC

6

Caught in south australia

1 Comment
2025/01/24
14:47 UTC

52

Small fish with no label at petco

6 Comments
2025/01/23
15:56 UTC

7

Weird fish

So I was at this Asian market, in one of the deep freezers there was this fish, it was a dark purple with several big black spots running down its tail. It was pretty big, I'd say about 20-30 inches long. Its dorsal fin was continuous, its tail looked kinda like an eel but wasn't an eel. It was pretty, but I can't find any pics of it online, and unfortunately didn't have my phone with me to snap a pic of it. It's been bugging me because I have no clue what it is! Anyone know what it could be? I have no clue if it's fresh or saltwater, but I am on the Texas coast if that helps at all. I'll also add that is was a lot thicker (taller?) than an eel. Not round, more of a thin fish shape. I've seen a lot of fish and never seen one like that before.

3 Comments
2025/01/23
05:36 UTC

31

Anyone know what this is? Caught in Mexico

3 Comments
2025/01/21
22:02 UTC

3

Any help identifying this little guy?

Caught off the coast of the UK, but not sure about much other than that.

3 Comments
2025/01/21
13:12 UTC

0

Identify this fish and it's cost please ( the orange one)

13 Comments
2025/01/21
05:24 UTC

17

I saw a seal eating this fish in Rhode Island, USA yesterday. My guess was Cod or Haddock?

3 Comments
2025/01/20
17:24 UTC

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