Questions tagged [goldfish]

Questions and issues regarding goldfish - one of the most popular aquarium fish. Use with other relevant tags, such as `feeding` or `health`

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How can I tell if my goldfishes' popeye is due to stunting or an infection?

I have three goldfish in a twenty-gallon tank. I know it's not the best set up and I would like to move them to a bigger tank when I get the opportunity, but they seem happy and healthy enough. I have ...
help_for_goldfish's user avatar
3 votes
0 answers
74 views

Is it safe to catch and move hibernating fish?

I have about 50 mixed types of goldfish and koi in an outdoor pond. I want to remodel the pond, expanding it to double the volume of water. I will relocate them temporarily to a 2000 gallon (7600 ...
Village's user avatar
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3 votes
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Goldfish skin around the intestine area is gone and stomach looks to be caved in

This is my first time posting so I’m sorry if I made any mistakes with my post. I think I’m going to lose one of my goldfish. About 2-3 weeks ago both of my goldfish (I only have 2) developed ammonia ...
Cece's user avatar
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2 votes
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Keeping fry out of canister filter?

I have a ~1000 gallon pond in my yard. It contains mosquitofish and goldfish. The pond currently has 2 of these submersible filters similar to this: However, to clean the filter, I need to wade into ...
solvingPuzzles's user avatar
1 vote
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Why does my goldfish have red under their chin, like a graze?

I've been lumped with caring for the office goldfish tank. Trying to do my best, I've cared for tropicals before. One of the goldfish in the tank, my favourite, has recently started developing a ...
ConnieMnemonic's user avatar
1 vote
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128 views

What is wrong with my goldfish's head?

What is wrong with my goldfish's head - it's like a growth/ blood blister? I'm sure it started off white and has now gone to this. Can anyone help, please?
Shelley W's user avatar
1 vote
1 answer
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Why my goldfish red cap lost its head color?

Is it normal that the color fading away..? The water seems fine. Food : Tetra Goldfish Growth and other pellet. It's been 2 months with me.
Dini's user avatar
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1 vote
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White bumps on goldfish

I have 2 goldfish in a 20 gallon (76 liters) tank and last night I noticed one of them developed a white bump on its side, then this morning I noticed the other one has a similar white bump on its ...
Sarah Flynn's user avatar
1 vote
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Goldfish-unknown white marks

I’m really concerned about one of my goldfish as this morning I noticed 2 marks on his body. One near the head and one near the tail. I noticed my bigger goldfish nudging him out of the way at feeding ...
KBrim's user avatar
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1 vote
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Lump on Goldfish

Several months ago my red cap oranda developed a lump on his side. It resembled an acne nodule. The lump was beneath his scales and didn't seem to cause him any trouble. He had some mild red streaking ...
DyingIsFun's user avatar
1 vote
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Fatal cotton like fungus on goldfish spreading to other?

I've had a black moore goldfish for 5 years. I just recently brought him with me to a new city and he's temporarily in a five gallon aquarium. Originally he was in a 30 gallon aquarium with other fish ...
pisces22's user avatar
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What is the whitish bump on fishes head?

There’s a weird bump on my gold fishes face. I don’t know if it’s a parasite or from him bumping his head on the ride home
Grace's user avatar
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Is this an injury or a disease?? I just got the goldfish

Its been swimming around a lot maybe it hit the tank?
Cheeto's user avatar
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30 views

Goldfish problem

Hey guys any idea what’s wrong with this poor guy he’s acting pretty normal but he has this big red spot/bump between his eyes and he has brown around some of the white on him. The white and the ...
Carley Sorg's user avatar
0 votes
1 answer
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Whats wrong with my fish?

Not sure what’s wrong with my fish. Got this fish about 3 years ago. Always been fine, in a small tank. Moved him in to a 50 gallon tank, and randomly( few months in ) grows a big ball on his head ...
Spliqbtw's user avatar
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Do I have to take my Koi Fish out of my 30 Gallon Tank eventually?

I accidentally bought a Koi fish thinking it was just a normal goldfish. After about 4 years now, he has gotten bigger (mouth to tail ~ 7 inches long) and more aggressive in our 30 gallon aquarium. He ...
ThN's user avatar
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My empty but not empty fish tank

My Betta died a couple weeks ago so now i have a tank filled with water, can my small female goldfish be in the small rectangular container that has rocks a cave and a sea anemone, and this tank has ...
Alisa Schoeffler's user avatar
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340 views

Why did all my goldfish suddenly die?

I have read this question, and this one, about goldfish/pond life suddenly dying. These situations are similar, but not identical to my own, and so I'm not sure whether this question is a duplicate. ...
Matt's user avatar
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