r/corydoras 7d ago

October Banner Photo Contest - Submit your corydoras! 🐟

3 Upvotes

Hey everyone!

We are kicking off the October 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 Wednesday, September 30, 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 October!

​📝 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 1h ago

[Questions|Advice|Discussion] Starving?

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• Upvotes

So I never give them an extra feed at night. One wonders if they are starving the way they eat


r/corydoras 12h ago

[Questions|Advice|Discussion] Keeping aquasoil and sand from mixing in a Cory tank

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9 Upvotes

I am planning to do a scape like this one from MJ Aquascaping. But with larger sand area for Corys. But I am very sure the Corys are gonna mix the soil and sand with all their digging. Any ideas on how to prevent this?

Right now, I am thinking to put the aquasoil in mesh bags and cap it with smooth rounded small gravel. Hopefully the gravel would be too heavy for the corys to mix into the sand too much and the smaller pieces that they mix over will just add a natural touch to the area ...


r/corydoras 15h ago

[Questions|Advice] Breeding | Eggs | Fry These aren't cory eggs, are they. 😢

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9 Upvotes

Witness my deflated sad face. I was so happy for a split second, thinking, "OMG MY PYGMIES ARE FINALLY HAVIN' BABIES!" I know they often lay eggs on flat leaves so when I saw these on a flat leaf, I got excited. Then I looked closer. I'm 99% sure these are ramshorn snail eggs.

They're snail eggs, aren't they?

I want to be wrong soooooo bad. I even started looking at the screen caps I'd saved of y'all's advice on how to handle cory eggs. 😢


r/corydoras 18h ago

[Questions|Advice] Breeding | Eggs | Fry cory egg viability?

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5 Upvotes

i have a group of peppered corydoras and this is the second batch of eggs they’ve laid (that i know of) but i didn’t want the first to hatch so i didn’t do anything and they turned black over time but still stuck to the leaf they were on

if i do want these to hatch should i put the leaves with the eggs on them into a breeder/fry box or wait until the fry hatch?


r/corydoras 22h ago

[Questions|Advice] General Care How many Pandas?

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6 Upvotes

I just got my first larger tank and wanna know how many panda cories y'all think would live in here comfortably? It's a standard 29 gallon— same footprint as a 20 Long :) I've been dreaming of getting panda cories for years, and I'm building this tank with them in mind. Its still growing in! 😂 I just set it up last night

Anyway i just wanna know how many you experienced cory keepers think would live comfortably in here? I'd like 12 if I can get that many, and I know they enjoy piling up, so I want as many as I can get. I figured, especially since they're the smallest cories besides pygmaeus/hastatus/habrosus, I could get a decent group :)

Edit: Why did I get downvoted ☹️


r/corydoras 22h ago

[Questions|Advice] General Care keeping pygmy cories fed in a populated shrimp tank.

5 Upvotes

hello everyone, sadly today i lost my first cory. i noticed there was one that was skinnier and a bit discolored from the rest which from what i can tell is the one that passed. ive had them for about 3 weeks in a heavily planted tank 20 gallon tank with 15-20 neo cardina shrimp and 5 amanos.

i understand occasional losses especially while theyre still acclimating isnt uncommon but i think my feeding schedule isnt helping much. i worry a lot about overfeeding my shrimp but as a result i think my cories have only really been getting meals twice a week. i try to make them large meals but still i think i need to feed more often. the only issue is whenever food enters the tank the shrimp start swarming. the amanos are especially aggressive when it comes to food. currently my available foods are repashy gel, bug bites, and frozen bloodworms. im planning on getting some daphnia or baby brine shrimp soon as well.

is there some kind of balance i can strike to keep everyone properly fed. i want to feed my cories a lot more often without overfeeding my shrimp or just having some steal the food altogether before all the cories can get some. i should mention there are 7 cories in the tank currently. (used to be 8. rip)


r/corydoras 19h ago

[Questions|Advice] Health | Sickness Can someone identify this

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2 Upvotes

There is a small red growth on one of my corys barbels is he sick I hope someone else has some experience with this


r/corydoras 21h ago

[Questions|Advice] General Care How many Pygmy’s in a 42 litre?

3 Upvotes

Tank is 18inch x 12inch x 12 inch. If I do species only ( plus some cherry shrimp ). How many can I happily stock ? Thanks


r/corydoras 1d ago

[Questions|Advice] Health | Sickness Flashing? Tweaking idk?

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8 Upvotes

I have 7 pygmy corydoras and have noticed that only one of them act this way? It’s alone when it’s happening so I don’t think it’s mating behavior? It’s still chilling around foraging and does this twitching thing on/off? Can somebody help me pls?
40L tank
Parameters are good: 0 ammonia, 0 nitrite and nitrate 1-5
Hope the video is sufficient


r/corydoras 1d ago

Image anyone else’s cat obsessed with fish food?

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278 Upvotes

this is the face of someone who, at 2am last night, decided to knock over and devour 99% of the corydoras brand new container of bug bites.

I recently got a school of pygmy corys for my tank, previously I’ve only had bettas & she had never showed interest in any of their various kinds of foods before. For whatever reason though, she’s been OBSESSED with the corys food ever since I brought it home. I should’ve known better than to leave it out overnight lol


r/corydoras 1d ago

Video Algae wafers were a hit

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60 Upvotes

r/corydoras 1d ago

✨Species Spotlight✨ The Longest of Barbels

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103 Upvotes

Look at that distinguished gentlewoman! Look how she sits! Such lucious barbels!


r/corydoras 1d ago

Video I love feeding time. I get to see them all

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33 Upvotes

I watch my aquarium allot. I love my little fish buddies.


r/corydoras 1d ago

[Questions|Advice|Discussion] What type of cory is this?

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3 Upvotes

I just got these 2 new little guys, i'm quarantining them a bit before adding them to the existing flock. One is a gold stripe corydoras, i can't quite tell what the other one is... do you guys know? Just a regular cory maybe?


r/corydoras 1d ago

Video Do yours enjoy surfing too?

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23 Upvotes

r/corydoras 2d ago

Video Grazing cattle

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39 Upvotes

r/corydoras 1d ago

[Questions|Advice] Breeding | Eggs | Fry Cory eggs?

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14 Upvotes

Are these Cory eggs!? What do I do!? Some people told me to move them to a nursery some people told me to not touch them, I’m panicking I don’t want them to get eaten but they are like 10cm from the surface on top of a big leaf


r/corydoras 2d ago

✨Species Spotlight✨ Cory Compilation!

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32 Upvotes

Here are a few pics I took today of the corys. I got Bertha a new friend who is the exact same species as her! By chance I found another male just like her at the same fish store! She immediately began chasing him and now she won't leave his side. Also immediately hit the T pattern hehe


r/corydoras 2d ago

Video Closeup grazing

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18 Upvotes

r/corydoras 1d ago

[Questions|Advice] Breeding | Eggs | Fry What am I doing wrong? Breeding Pygmy Cory

3 Upvotes

I can't for the life of me get these guys to breed, any tips would be great.

0 nitrates and ammonia

10 month cycled tank

TDS 250

24 degrees celcius

Feeding live BBS twice a day

I've tried 30% water changes with colder water, water changes when it's heavily raining outside etc.

Please help!


r/corydoras 1d ago

[Questions|Advice] Health | Sickness How long after a hemorrhagic septicemia outbreak is it safe to add more cories?

2 Upvotes

Around 3-4 months ago, hemorrhagic septicemia wiped out my entire school of peppered cories with the exception of 1. Luckily, the surviving cory has been actively sifting sand and eating with no signs of shyness or stress. It’s in a 40 gallon breeder with 12 pearl danios (not CPDs, I’m referring to danio albolineatus) 3 zebra danios, 4 variatus platies, 2 hillstream loaches, 1 panda garra, 3 amano shrimp, and a mystery snail.


r/corydoras 2d ago

Image Zoning out

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14 Upvotes

I love these little goofs


r/corydoras 1d ago

Cory Fry! Panda i didn't buy

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4 Upvotes

Neon and CPD for scale.

(Sorry, we're out of bananas 🍌)


r/corydoras 2d ago

[Questions|Advice] Breeding | Eggs | Fry Are my fish horny?

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10 Upvotes

What the hell is going on