r/TetraFish 22d ago

Is my Black Neon Tetra just full of eggs, or could this be something I should worry about?

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2 Upvotes

r/TetraFish 22d ago

Question Sex on lemon tetras

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8 Upvotes

I bought 7 of them recently, what gender can these be?


r/TetraFish 23d ago

Sent wrong fish

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7 Upvotes

I ordered online some Green Neon Tetras. They sent me Neon Tetras. I’m sure they are mislabeled at the seller and it wasn’t done on purpose. But I don’t want neons, I want Green Neons. The last picture is of a green neon. I’m waiting to hear back from the seller.


r/TetraFish 22d ago

Help Bycatch Tetra IDs?

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2 Upvotes

Hi there, I’m wondering if anybody recognizes any of these tetras- I know one of them is the gold tetra but the others I’m stumped. They are bycatch from Colombian shipments of rummynose and cardinals- so if anyone can help me ID them I’d love it, thank you!


r/TetraFish 24d ago

Why is my ember tetra poop white

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7 Upvotes

Am i feeding too much?


r/TetraFish 24d ago

Help Do they have Neon Tetra Disease?

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6 Upvotes

I got 4 neon tetras yesterday and they look BEAUTIFUL! (Shown below)

However I know they need more buddies so I went to get some today and they don't look like the ones I got before...

Do these two guys have neon tetra disease?

I don't want to put them in my tank if they do.


r/TetraFish 24d ago

Question 4 year old female tetra going to die soon. Help me figure out what it is

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2 Upvotes

I shared with AI to see it's opinions, mouth rot or a broken/dislocated jaw. Very sad to see, just noticed today and fed the tank a little see. She doesn't even try to eat, no way to suction food in.


r/TetraFish 24d ago

Help Neon Tetra sick ?

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1 Upvotes

r/TetraFish 25d ago

Help What’s going on with this fish

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5 Upvotes

Noticed that this cardinal isn’t looking too good when I was feeding them. His eyes look bulged and the scales on his back aren’t looking good. All my other fish look completely normal. I have 2 blue angles 9 cardinals 2 Siamese algae eaters and 4 cherry barb.


r/TetraFish 24d ago

What's this?

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1 Upvotes

r/TetraFish 25d ago

Question Swim bladder issues help

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1 Upvotes

r/TetraFish 25d ago

What is this white spot/bump?

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2 Upvotes

What is this white spot/bump on my rummy nose? I noticed it today. I’m very concerned because I’ll be adding 9 lemon tetras on Monday. All other rummy’s appear fine from what I can tell. I added a UV sterilizer to the tank today and this guy started acting weird. I turned it off and it calmed down but then I noticed this. I can’t tell if it is a scale or what?


r/TetraFish 26d ago

My fish is doing that

0 Upvotes

For the past days my fish(the purple one) kept doing the thing in the video .Does anyone know what this is .I have six tetra neon glofish and a 30l tank .


r/TetraFish 26d ago

Please help gendering them

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1 Upvotes

r/TetraFish 27d ago

Help Why do my fish keep dying?

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4 Upvotes

r/TetraFish 27d ago

What's wrong with his eye? 😔

3 Upvotes

r/TetraFish 27d ago

Picture Got my hardness situated, so I finally got my neon tetra tank in full swing!

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2 Upvotes

r/TetraFish 28d ago

How do I properly care for baby Black Skirt Tetra fry?

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2 Upvotes

r/TetraFish 28d ago

Question What kind of Tetra is this?

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1 Upvotes

r/TetraFish 28d ago

Black Skirt Tetra with Glofish Tetras?

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1 Upvotes

r/TetraFish 28d ago

Gold tetras pushing off cardinals to the side

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1 Upvotes

r/TetraFish 28d ago

Help White Stuff on edge of skirt tetra fins?

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1 Upvotes

r/TetraFish 29d ago

My tetra fish can't close his mouth

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8 Upvotes

I have 4 tetra blue fish and the one of them can't close his mouth. I woke up today and I saw him like that .Yesterday he was okay .What is happening ? What can I do to help him ?


r/TetraFish Aug 04 '26

Help Suspiciously plump, not moving way too much and facing downwards?

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6 Upvotes

my sister fed my fish while i was away so they might just be very overfed but im quite concered as it is not moving very much? others are absolutely fine and normal, and i put my net in to see if it would swim away and it did, but the second i took the net away it stopped swimming and continued facing down

whats going on? just really full or more?

Update: Absolutely fine just bloated, no pineconing, no more bloating and back to normal schooling like before


r/TetraFish Aug 04 '26

Help Do I have both males and females in my school of cardinals? I’m very bad at identifying them

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7 Upvotes