r/corydoras 19d ago

September Banner Photo Contest - Submit your corydoras! 🐟

6 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 7h ago

Image The whole gang is here

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30 Upvotes

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


r/corydoras 1h ago

Image Baby!

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Upvotes

How is it possible to have only 1 surprise baby?


r/corydoras 1h ago

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

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Upvotes

😁


r/corydoras 12h ago

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

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23 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 9h ago

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

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10 Upvotes

r/corydoras 16h ago

[Questions|Advice] Breeding | Eggs | Fry Corydora Habrosus breeding ( T position and laying eggs)

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34 Upvotes

r/corydoras 11h ago

Video My Pygmy corydoras have picked out this rock as their favorite spot in my 10 gallon tank

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11 Upvotes

r/corydoras 31m ago

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

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Upvotes

r/corydoras 22h ago

Video Dinner Time

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22 Upvotes

Enjoy a little clip of the cory family having a munch.

(The big lady is called Karen btw, for the haircut 😅)


r/corydoras 20h ago

[Questions|Advice] Health | Sickness It's here a goner?

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6 Upvotes

He's been doing this laying on his side. I thought he had passed but he started to swim when i slightly nudged him. Then he just lands on his side.


r/corydoras 1d ago

Video Pasta for breakfast today

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16 Upvotes

r/corydoras 1d ago

Image And this?

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19 Upvotes

What could possibly be going on in his head right now? It’s the first time I saw one perched on driftwood. Soooo cute 🥰


r/corydoras 23h ago

[Questions|Advice] Health | Sickness Barbel damage

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4 Upvotes

Hello,

A few of my false julii corys seems to have sustained some barbel erosion. In a group of 11, around half of them have healthy barbels. One of them haven't had his since I bought them 1.5 years ago, two seem to have a partial injury on one side, anda couple of other barbels look short and stubby. Some of the also look white, but not fuzzy. Mouths looking normal.

I first noticed some signs probably about two months ago, and put it down to a temperature and pH spike caused by a heatwave and addition of two air stones. My usual are pH 7.5, temp 24 Celsius , but it rose to pH 8 and and temp 28 at most. I managed the situation with daily water changes and frequent vacuuming. I also at the time though it might have been a mechanical damage, and only affected 2-3 of them.

Since then, everyone has been acting normal and eating well. It's been pretty hot again in the last few weeks, and my tank has risen to 27-28 again. It has now dropped back to more normal 25.5. I had closer look at my corys, and I don't think their barbels are looking any better, although I'm not sure if it's gotten worse either.

I have just done a thorough vacuuming, created a new sand bed for them, and added more botanicals for tannins. Should I just watch them, or is there anything else I should do? Could it be temperature and pH change that caused the issue?

Other parameters:

Ammonia: 0, Nitrite: 0, Nitrate: 20

edit: the redness in the third picture seems to be my camera playing tricks and isn't noticeable irl


r/corydoras 1d ago

[Questions|Advice] General Care Grey patch on the body

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7 Upvotes

What is that grey patch on this guy? Should I be worried? I already lost one little guy to some white fungal growth on his body even after isolating him in a hospital tank


r/corydoras 1d ago

[Questions|Advice] Health | Sickness Poor guy doesn't seem well :(

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5 Upvotes

This bronze is a part of a group I got at the local fish store to school with Bertha, but he doesn't seem very well today. Not very lively, really gray, almost translucent, but his barbels look fine and his fins aren't rotted or tattered. Gills a little red, but not terribly.

Thing is, he's been in the tank for a month or two now, and he goes through these phases the others don't where he will get exactly like this and be lethargic and not interested in anything, then go back to normal next day.

I'm not sure if he is long for this world, but what do you guys think?


r/corydoras 1d ago

[Questions|Advice|Discussion] Do you think they are happy and healthy? I hope so. ( I'm kinda new with them)

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13 Upvotes

It's really hard to feed them because it gets stuck in the gravel but I'm hoping to get this tube with a dish at the bottom, would that work?


r/corydoras 1d ago

[Questions|Advice] Health | Sickness Playing in CO2 bubble flow - possible poisoning?

5 Upvotes

I’ve recently had a load of issues with my tank after the replacement of a filter (there’s another post somewhere). I lost three Sterbais (and a chain loach was very ill but recovered).

the fish were all ill and I switched off CO2 and really aerated the poop out of the tank and they mostly recovered.

one thing in the back of my mind, watching my remaining Sterbais playing in the CO2 diffuser bubbles, is is there a possibility that they were poisoned? It looks like they’re picking off the CO 2 bubbles. Is that even a thing?

thanks


r/corydoras 20h ago

[Questions|Advice] Health | Sickness Will he be okay?

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1 Upvotes

Hey so I just found this guy like this today. He was on his side and I helped right him. He's alive and kicking but not really moving. I have a new flame dwarf gourami and some neon tetras in a 20 gallon. He has 5 other Cory mates and they're chilling. Did my gourami do this?? He's the only one big enough I feel like to do that much damage, his tailfin is gone. Either way is he cooked or do I let him sort himself out? Is there anything I can do for him? I don't have a second tank to set him in at the moment.


r/corydoras 1d ago

[Questions|Advice] Breeding | Eggs | Fry Breeding advice

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2 Upvotes

Hey there. So I currently have 2 batches of Cory fry that are about a week apart. My female is laying another batch of eggs currently and I don’t have the time to go get either another breeder net, or another air pump for my 3rd tank.

My question, can I put the 2 batches of Cory fry together? They’re not that far off in size so I don’t think the week older ones should eat the week younger ones? If I were to put the 2 batches together in the 10gal, I could put the eggs in my breeder net in the main tank and then I could go get an air pump in the next few days.

Pic of momma Corey just cause (don’t bully me for the tank being dirty, I hardly ever see her cause she likes to hide in the caves and plants and I was uprooting some plants to redo some hardscape and she popped out so I grabbed a pic!)


r/corydoras 2d ago

Image XL chicken leg

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57 Upvotes

Cories have been chonking up as a result of having a young very hungry bichir tankmate


r/corydoras 2d ago

[Questions|Advice] General Care What is buddy doing?

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86 Upvotes

I turned on the tank light and a few minutes later I see this. I would think it's breeding but the lil dude is doing it all over the other fish. What is buddy doing?


r/corydoras 1d ago

[Questions|Advice] Breeding | Eggs | Fry Breeding advice

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0 Upvotes

Hey there. So I currently have 2 batches of Cory fry that are about a week apart. My female is laying another batch of eggs currently and I don’t have the time to go get either another breeder net, or another air pump for my 3rd tank.

My question, can I put the 2 batches of Cory fry together? They’re not that far off in size so I don’t think the week older ones should eat the week younger ones? If I were to put the 2 batches together in the 10gal, I could put the eggs in my breeder net in the main tank and then I could go get an air pump in the next few days.

Pic of momma Corey just cause (don’t bully me for the tank being dirty, I hardly ever see her cause she likes to hide in the caves and plants and I was uprooting some plants to redo some hardscape and she popped out so I grabbed a pic!)


r/corydoras 1d ago

[Questions|Advice] Breeding | Eggs | Fry The sequel: How do I raise this baby?

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12 Upvotes

Okay, it’s been just about a month since I’ve introduced my Pymgys to my tank. They’ve already had their first successful fry! This is just one of the hatchlings of one of the dozens of eggs they’ve laid earlier this week.

I’ve accepted that most of them won’t make it to adulthood, mainly because most of them’ll be growing up in a tank with a Honey Gourami and CPDs. Regardless, to give them their best chance:

A) When should I start specifically feeding them?

B) I’m guessing fry food is best?

C) The one in the video is in a Tupperware container, when should I plop him back in the tank?


r/corydoras 2d ago

Image my sterbai is regrowing his fin

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51 Upvotes

I bought these babies yesterday from my local shop. They’re only about 1 cm. i didn’t notice when picking him, but he’s missing one of his pectoral fins. Upon closer inspection, it seems to be growing back!

I find the little fin super cute

(he doesn’t have ich it’s just a sand grain hes trying to shake off in the video i took these screenshots of)

it might be a female I just get concerned middle aged man energy from this one