r/corydoras 21d ago

September Banner Photo Contest - Submit your corydoras! 🐟

5 Upvotes

Hey everyone!

We are kicking off the September Banner Photo Contest to decide which community member's fish will grace the top of the subreddit for the entire upcoming month.

​📅 The Timeline & Rules:

How to enter: Drop your best, highest-quality photo of your corydoras right here in the comments.

​Timeline: This contest starts right now and runs until Monday, August 31, 2026.

How to win: Browse the comments and upvote the photos you love! The photo with the most upvotes by the end of the month will become the official r/corydoras banner for the entire month of September!

​📝 Guidelines:

​Only one photo entry per person, please.

​The photo must be your own original content.

​Keep horizontal/landscape dimensions in mind when picking your photo so it fits well in the banner space. The ideal size for a Reddit community banner is 1920 × 384 pixels (5:1 aspect ratio).

​Let's see those beautiful corys and tank setups. Happy upvoting!


r/corydoras 5h ago

✨Species Spotlight✨ Kittyfish hanging out

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88 Upvotes

C. Pygmaeus, who I nicknamed kittyfish!


r/corydoras 11h ago

Video The Gang's All Here!

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125 Upvotes

It's food time and everyone aside from a few on the perimeter of the tank came to eat


r/corydoras 1h ago

Video Let's goo Cory gang!!!!

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• Upvotes

r/corydoras 12h ago

Longfin Surprise longfin! … with a twist?

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38 Upvotes

So, I recently got peppered corys for my garden pond, and I noticed this big Chonk of a lady sticking eggs under the water lily leaves, so I guess they like it there :3 But I was a bit confused and maybe worried by her weird-looking fins. And then saw someone here share their longfins, so I thought "ah yes! that's her deal ok"
So, I caught her to take a couple pictures and compare with online references, and let her go right away. But something was weird, so I caught her again, as well as a few friends, so I could keep them inside and try to get more eggs…
Because.
I can not find any pictures of longfins where their *anal* fin is also that long :o
I am baffled, but also pleasantly surprised? The look of that extra long fin is so elegant, I love it!


r/corydoras 1h ago

[Questions|Advice|Discussion] New corydoras

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• Upvotes

Hello, I'm new here. Just got six Corys for my 20 long. They are a bit thin but I hope to fatten them up as time goes on, also I was wondering the exact species. They were sold as jullis but the markings on the face almost make me think false jullis but I could be wrong


r/corydoras 18h ago

Video My lil bubba riding a guava leaf

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47 Upvotes

I think it likes the rocking!


r/corydoras 23h ago

Image My Corydoras’ breakfast. Greetings from Korea! 🇰🇷

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48 Upvotes

Hello!


r/corydoras 8h ago

[Questions|Advice] Health | Sickness Panda Troubles

2 Upvotes

Also posted in r/aquariums

Hi, all
I recently inherited 2 Pygmy albino corys and a stunning and chill female betta in a 20g. After playing around with aquascapes and cycling the tank for almost two months, I decided to add to the Cory Group. I started with a green gold and three pandas from a local breeder. I knew immediately after acclimating and entering the tank that two pandas wouldn’t make it, somehow. And in the first week, two of the three pandas died. The green gold is SUCH a personality and very healthy, though. At one point, nitrate spiked to 5ppm and out of precaution I’ve moved all fish to temporary tanks while I fix and wait on the cycle, now knowing to expect a potential spike after cycling. Anyway, I’m wondering if pandas are more sensitive than others to water parameters or if perhaps this is more related to the breeder? Could/should I have done anything different? Any insight is helpful. Still new to this and those two pandas passing was honestly heart wrenching, I would love to not have a repeat of this.

EDIT: water temps were consistently 78°-80°, fed alternating pellets, wafer, brine - depending on the day. Every two days there was no feeding as I felt my daughter was possibly over feeding giving once a day. Mostly live plants.


r/corydoras 1d ago

Video Just being big and greedy lol

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101 Upvotes

I have 3 honkers in this shoal but this one specifically likes to act like it hasn’t eaten in 3 years


r/corydoras 17h ago

[Questions|Advice] Health | Sickness Question: What's the red dot on their anus?

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1 Upvotes

Noticed this red dot on them a around 3 days ago. The sick one is paler than the other pandas. I got them from different places so thought it was normal. Haven't noticed any odd behaviors.

Parameters should be fine; heavily planted, egg shells for buffering, hard water, and snails for food safety. Berried shrimp will tell me when there is a problem.

Apologies in advance for the tank decor, one day it won't look like vomit.


r/corydoras 1d ago

Image the size difference 😭😭

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31 Upvotes

r/corydoras 1d ago

Cory Fry! I didn’t have any luck with a new baby Cory-only tank so I threw them in the shrimp tank.

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38 Upvotes

It seems to be successful! Not totally sure since I gave them too many good hiding spots though and I rarely see more than 1-2 at a time, but that’s a good sign that it’s usually one of the bigger ones?


r/corydoras 1d ago

✨Species Spotlight✨ Yummers Time!

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17 Upvotes

r/corydoras 1d ago

[Questions|Advice] General Care Looking for a center piece tank mate. Listening to suggestions

2 Upvotes

So,

I've kept Corys a handful of times before. Usually alone. Or like now, Venezuelan with Pygmy in a 20 long.

I've also mixed with Tetras, Rosbora, even successfully with a Betta.

Just want to hear suggestions for something.

Probably a single fish, I want to keep it reasonably low in the bioload.

Maybe somebody will mention something I haven't thought about.


r/corydoras 2d ago

Image Baby!

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77 Upvotes

How is it possible to have only 1 surprise baby?


r/corydoras 1d ago

[Questions|Advice] Health | Sickness New Cory advice

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5 Upvotes

Hi Cory team,

This white stuff is on the tail fin of my new Cory Similis (3 days in). It's on this one only, not on any of the others. Unsure if it was like that when I got it.

Is this something or is it nothing? Online seems to suggest tail variations can naturally look like this, but it doesn't seem right. Seems healthy otherwise for now.

New to Corydoras so would appreciate any help!

Drip acclimatised them over an hour, nitrates <20ppm.


r/corydoras 1d ago

[Questions|Advice] Breeding | Eggs | Fry Gravid or fat?

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9 Upvotes

Is the Albino Cory possibly pregnant?


r/corydoras 1d ago

[Questions|Advice] Health | Sickness Mouth fungus?

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3 Upvotes

I bought a group of six Venezuelan orange corys a few months ago, and put them in my 90L tank with endlers. I took two out after I noticed they were staying too small and skinny, I assumrd since the endlers were eating all their food. I've temporarily moved them to a 20L to fatten them up, but lately ive noticed the smaller ones mouth looks odd. Is it some sort of fungus? I do have a small hydra problem in the tank, but the sparkling gourami fry i bred have been dealing with them. Any advice would be super helpful thank you.


r/corydoras 1d ago

[Questions|Advice|Discussion] Can I add 9 sterbais here ?

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6 Upvotes

Hi all!
This tank is 120L, 60x40x50cm. Its 6 months old tank with stable parameters, Nitrate 10, pH 6.8, 25.5C, 8dGH, 5dKH and substrate is half fine gravel half fine sand.
This is current stocking list:
•13x Pseudomugil Furcatus
•11x Iriatherina Werneri
•13x Pygmy Corys
•1x Bolivian Ram
•1x Honey Gourami (Planning on building a tank for Gilbert)
•1x Subadult and 1x Juvenile BN Pleco (Might put one to Gilberts tank)
•3x L262 Hypancistrus fry (Will rehome 1 when they grow up enough)
•2x Stiphodon Ornatus, 1x Stiphodon Neon Blue, 1x Sicyopus Zosteropholus

Aqadvisor says its heavily overstocked (Mainly because of plecos I think) but its densely planted now and will be heavily planted when all of them grow.

What do you guys think?


r/corydoras 2d ago

Image The whole gang is here

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56 Upvotes

Behold my Cory school and this is only a part of the group haha


r/corydoras 2d ago

Cory Fry! My Pygmy fry are getting big enough to start looking like actual fish and not bugs!

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40 Upvotes

r/corydoras 2d ago

✨Species Spotlight✨ Fishy feeding time (: ( plus I changed the water today, so they are happeeee)

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8 Upvotes

😁


r/corydoras 2d ago

Cory Fry! Found a clutch of Cory's in my tank

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34 Upvotes

Rearranging my 125 gallon, my male albino bristlenose trashes the place daily. Found 5 new Cory's. Only could get 4 in the frame, but there are 5 found so far. They could be laser oranges, but they have a green color tint. Maybe just an early stage color, or my old eyes are off.

Just thought I'd make a post, I am so happy by this nice surprise. Hope all is well in fish land for everyone.


r/corydoras 2d ago

[Questions|Advice] Health | Sickness Would this substrate be a problem for Cory’s?

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3 Upvotes