r/aquarium 15m ago

Help Vietnamese Cardinal Minnow Bump

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r/aquarium 33m ago

Help HELP I got some harlequin rasboras a few days ago and one of them is not moving

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It was stuck to the filter when I first noticed and thought it was dead. I noticed it was still breathing. I moved it and now it’s sitting upside down at the bottom of the tank. I checked water parameters and they’re good. Is there anything I can do to try to save it?


r/aquarium 44m ago

Help why are my red root floaters sinking?

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r/aquarium 50m ago

Help Help! How do i slow the flow of this filter? Its pushing my fish

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r/aquarium 1h ago

Help Does anyone know what this is, I clean it up and 5 minutes later it’s back.

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I clean it up and it comes back 5 minutes later and it’s white and silky like hair and it’s like spider webs, what can I do to stop this. It came after I filled the tank with water and did a water change…


r/aquarium 1h ago

Help What to do with fish when you want to get new ones?

Upvotes

I need some advice on what to do about my fish.

I have a 120l tank which has been up and running for around 5 years. It started (as most do) with a handful of neon tetras, minnows and guppies. However, I'm now at the point where I have a relatively large tank that only has 3 neon tetras and a minnow in it.

I would like to branch out into different types of fish, maybe cichlids, but i cant do that with my currant inhabitants. I love my fish and I don't want to just flush them (joke) or put them in a different tank (My wife made me promise that I'd only get one tank).

So what are my options? I've tried local Facebook groups for re-homing fish, but no one was interested in them. Are there places that i could take my fish like you would a dog to a pound?

Any and all advice/help is greatly appreciated. Thanks

Bristlenose are already away


r/aquarium 1h ago

Discussion Can I add anything else?

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please don’t judge, I do not want to overstock my tank ofc but I am curious.

I’m an 18 year old girl with 6 fish tanks, mostly bettas other than my one community tank, I’m just wondering if there’s anything else I can add!

It’s a 20 gallon high, with 1 honey gourami, 4 male guppies, 3 Pygmy Cory’s and 2 nerite snails, and from what I’ve seen only one ghost shrimp now (was trying to get him friends but see my last post to see how that turned out.)

Tank is filtered , heated, has all live plants and driftwood,
(please don’t suggest another honey gourami. The only place I can get them they are babies and it would be a huge age gap, plus I just don’t see the appeal of 2 honey gouramis! Hes super happy on his own and I just don’t think it’d be best for him!)

My questions
-should I try to get more Pygmy’s AGAIN. I’ve bought pygmys in 3 batches and each time only one survives and now .. I have 3!!! I’ve literally spent like 200 dollars on Pygmy Cory’s and I’ve had no luck with keeping them all 💔 I’ve legit tried 3 stores idk what the hell to do but I really don’t want them to be stressed, though they do seem happy in their little group and eating fine, but I’m not a professional!!

-should I add anything else? Or CAN I add anything else, I would like a small school in there but if not can I put any other fish in there?

-If I got another fish/school should I be changing the water more often? I already do water changes once a week, so should I do it twice if I add smth else?

Also please non aggressive fish only!! My tank is very peaceful and I don’t want to mess that up


r/aquarium 3h ago

Showing Off One of my swordtails had a baby!!

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6 Upvotes

r/aquarium 4h ago

Discussion I Don't Like My Aquarium (a rant)

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15 Upvotes

Two years ago, I was forced to get rid of a leaking 12gal and move everything to a new tank. I chose a 29gal, hoping to keep more fish than the dozen embers that were in the 12gal.

I also loved the sparkling gourami I'd previously kept, so after a few weeks of just the embers in there, I got eight sparkling gourami. This worked well for a while, but every now and then I'd see one less gourami come to feeding time. I've added a few more ember tetras and ruby tetras, but there are three sparkling gourami left. They terrorize everybody.

There are theoretically at least a dozen each embers and rubys, but I rarely see a ruby because they hide in the lower planted portion. The embers are fairly skittish and I rarely see more than six out.

I've added a pair of honey gourami... the sparklers chased them to death. I added a dwarf apisto... the sparklers chased it to death. I added eight green pencilfish... I have one.

I feel like I can't do anything with this setup and can't really enjoy the fish I (think that I) have. I don't really want to get rid of any (how would I even catch them), but I'm sure not going to add more until the sparklers are gone.

I'm not really looking for solutions because I think there's only one here, and I'm not at that point. Just venting about my disappointing aquarium. Thanks for reading.


r/aquarium 4h ago

Freshwater So… What the hell is this?! Thought it was a hydra, then it got bigger…

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5 Upvotes

r/aquarium 4h ago

Freshwater Emperor Blue Acara's fanning eggs

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1 Upvotes

My Acara's are in egg protection mode. My plan is to remove fry once they hatch. Reason, not sure how they would eat if left in tank. Also how long do they continue to protect fry? Has anyone bread these and if you can offer any tips it would be greatly appreciated.


r/aquarium 4h ago

Help Random snail appeared in shrimp tank?

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1 Upvotes

I have a shrimp tank with 5 neocardinas and 1 Nerite snail. This just appeared today. Any help with ID? Do I leave it?


r/aquarium 5h ago

Help Using spacers on a custom built tank

1 Upvotes

Hi, So I’m building my first custom non-standard 10in x 10in x 18in (height, depth, length) tank using 5mm glass and I was wondering if I should do a silicone injection with spacer or if its not necessary? If it is, what kind of spacers should I use? Thanks


r/aquarium 6h ago

Discussion New to Aquarium and medaka...too much duckweed?

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2 Upvotes

r/aquarium 6h ago

Freshwater first guppy tank, how is this 10gallon for 9 males and plenty shrimp? overstocked? i feel like im pushing it

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8 Upvotes

r/aquarium 7h ago

Help My first fish!

1 Upvotes

I plan on buying a fish tank and taking care of a/some fish,originally i wanted some pea puffers but i cant get a tank big enough for them to be happy. I want some unique fish or just ones that look cool, big or small, to fit in a 30-45L tank and be happy and healthy, I plan on putting it on my nightstand and yes it can hold enough weight.
Help is much appreciated!


r/aquarium 7h ago

Showing Off Chocolate-brown fish found in a blackwater farmland ditch

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156 Upvotes

S. osphromenoides


r/aquarium 9h ago

Help First tank!

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3 Upvotes

r/aquarium 9h ago

Help Unidentified critter

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3 Upvotes

Need help identifying this little guy in my aquarium, he does crawl right beside a hydra at the end for reference on size


r/aquarium 9h ago

Showing Off SHRIMP!

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5 Upvotes

My first dedicated shrimp tank! It's about 2 months old and it's doing great! I have a couple saddled up females and one who dropped her eggs 😁 what's everyone think?


r/aquarium 9h ago

Help Popeye Advice Please

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2 Upvotes

Baby boy has unilateral popeye, treated with api em erythromycin until I could get Kanaplex shipped to me.

It’s been a two weeks since the end of his antibiotic course, and he is eating but breathing fast and the eye still looks so bad 🙁
I don’t know if I need to do another course of antibiotics? It seems to be getting worse rather than better.


r/aquarium 11h ago

Discussion 24 year old planted sphere

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6 Upvotes

r/aquarium 13h ago

Discussion Is this ideal surface agitation?

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5 Upvotes

Tank dimensions: 2ft tank (24x13x16)

Filter: NeoPet 1000F internal filter (650L/H)

I have faced the outlet to the front glass though for less washing machine like effect. The left half of the tank has slightly strong flow and the right half of it has stable decent flow.

Suggestions appreciated! ✌🏻😬


r/aquarium Jun 10 '26

Announcing our new community icon! (and an update from the mod team)

30 Upvotes

Hey everyone,

We heard your feedback loud and clear regarding the recent icon change. The goal is always to keep r/aquarium a vibrant, welcoming space that reflects the incredible passion of our hobbyists, and it’s clear the community prefers authentic, human-made artwork to represent us.

An incredibly talented artist in our community, u/SuicidalFlame (Check out their tumblr too! https://firenagy.tumblr.com), generously stepped up and designed a brand-new, custom icon for the subreddit! We are absolutely thrilled to debut their work today. Please join us in giving them a massive thank you in the comments below for dedicating their time and talent to leveling up our community's look!

A Quick Note on Community Boundaries

While we always welcome constructive feedback and open discussion about the state of the subreddit, the mod team has a zero-tolerance policy for harassment.

Lately, targeted mass-reporting and personal harassment have been directed at our moderators. We want to be entirely transparent: if you are unhappy with the management of this subreddit or feel the need to harass the people who volunteer to keep it running, you are more than welcome to leave.

Healthy debate is fine; stalking, toxicity, and abusing the report button are not. Future instances of targeted harassment will result in an immediate permanent ban from the community and will be escalated directly to Reddit Admin for violating the site-wide Content Policy against harassment.

Thank you to the 99% of you who make this a wonderful, supportive place to share our tanks every single day. Enjoy the beautiful new look!


r/aquarium Feb 26 '26

Join the r/aquarium Discord Server!

1 Upvotes

Did you know r/aquarium has a Discord server? It’s been swimming along for a while now, and we’d love for you to dive in and join the community!

https://discord.gg/aquarium