Animal Stories - Comet Goldfish

Animal-World Information about: Comet Goldfish

Comet Goldfish look just like regular goldfish but with a much longer and more deeply forked tail fin!
Latest Animal Stories
Josh Keaveney - 2012-04-21
I had several coments in a tank together... I got them all at the same time from a store for .13 each... every morning I wake up and theres at least 2-3 dead?? I have checked everything and its all in the perfect range... the temps perfect... they are showing no signs of stress... scales, tales, and eyes all look perfect... they are perfect looking fish??? I just dont know what to do?? I was wondering if they could have a disease from the pet store? I treated the tank with Tetracycline... and havent lost anymore since I have done this... Any ideas what could be wrong?? Thanks, Josh

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  • Jeremy Roche - 2012-04-21
    These comets normally come in horrible conditions and a lot of the time full of disease. They are mass shipper primarily for feeding other fish.
  • Jeremy Roche - 2012-08-25
    These fish are breed in mass quanities and a lot of the time in poor quality and used as feeders for larger fish.
  • Dan - 2012-08-24
    It could be that you added to many fish at once and therefore the ammonia levels shot through the roof. This may have caused your fish to die of ammonia poisoning.
Mandy - 2011-12-10
Hi, I have had a fan tailed goldfish for about 5 years and he was very healthy, my tank is 18'' x 12'' x 12''. I recently bought a comet to accompany my original fish and they seemed to be doing well together.
Today I noticed that the fan tailed fish appears to have fin rot as his fins are looking very tatty. Also the comet seems to be 'bullying' the fan tail and the fan tail seems scared of him and is hiding in the corner of the tank. Please can someone advise me what to do.

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  • Sal - 2012-04-17
    I had a comet for 3yrs, it was a beautiful pick in color, happy little thing it was, right up until I thought why not add more fish, looking really empty in there with just 1 fish (big tank) so I bought 6 of the same, and my gums did my fish panic and get scared of the new arrivals. The other fish, being young where picking on my fish, and shortly after my fish died, felt like my friend had died, so word of warning, if your gonna introduce fish, do it one at a time, over a period of weeks to months.
  • Megan Flynn - 2012-06-15
    From what I understand, you should never mix fancy goldfish (such as your fantail) and straight tail goldfish (such as your comet or common). The fancy goldfish can not swim as fast to compete with the comet. If you told the fish store that you already had a fancy, they should have never sold you a comet to put in that tank. Maybe some people have the experience where they can mix the two, but I wouldn't take the chance if this were my fish.
  • Suzanne - 2012-06-25
    I have been devastated this week with the loss of my two beautiful 2-year-old Comets. I recently had my 700-gallon pond cleaned and decided to add some additional Comets. I guess that was a bad move, because they were unhappy to have small companions, or enemies, and now all I have are the little ones I introduced to the mix. I had never had a problem adding fish in the past, but I guess the two-year-olds were content to have the pond to themselves.................there were seven large fish in there at the time that the lily pads died off last winter and five of them disappeared...............bird food, I suspect!
lily west - 2012-04-04
My comet is getting a bit of black around his bottom fin. Is it natural?

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  • Jeremy Roche - 2012-04-05
    Perfectly normal.
  • Chelsea Nichols - 2012-06-03
    If your fish continues to turn black, as if it is spreading, that's not normal. I bought feeder goldfish from Petco once and I picked one out because of its pretty black tail fin and gold body. Later that week I noticed black on all of his fins, around his eyes and still spreading. I called Petco and explained and the guy told me that sometimes fish catch this disease nicknamed the 'fish plague'. He said there is no known treatments and that experts aren't even positive whether its a parasite, bacteria, fungus, ect. He said basically that my fish is going to continue to turn black until he is completely black and then he'll die. I was like 'Thanks' sarcastically of course. Why are they knowingly selling sick fish? Anyway, eventually I started to notice black spots on the fins of my other previously healthy fish, so just keep this in mind.
  • Jeremy Roche - 2012-06-04
    Tes that is common.
Gabriella - 2012-05-07
I've had my 5 comet gold fish for over 9 years, in a 40 gallon tank. I have one 9 year-old Cory Cat in there as well. I recently bought them a different type of fish-food (TetraFin - Goldfish flakes), and they literally started dying one by one. I started treating them with the 'Melafix' medicine I bought from my local department store, it hasn't done anything. Also, my tank is very old, about 12 years-old. But, I haven't the money to get a new one.

They've lived peacefully and happily for years. I don't know why they are all dying. I've had them since I was a child, and seeing them all go like this makes me sad.

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  • Jeremy Roche - 2012-05-07
    Why did you treat with the Melafix? Could just be dying of old age if they are all around the same age.
  • Gabriella - 2012-05-07
    I thought that they maybe had some-sort of common goldfish disease. Several people told me to treat them with Melafix to see what happens.
  • LUCY - 2012-05-17
    Is comet gold fisih ok with calestail gold fisih?
jake - 2012-04-12
My comet was a copper color and in the past month he's developed bright orange spots on his sides. Is he ok?

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  • Jeremy Roche - 2012-04-12
    As they age they do change colors and can get different patterns.
aime byrnes - 2012-04-04
I can pet my comet fish but should I?

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  • Jeremy Roche - 2012-04-05
    As fun as it may be. It is always best to not have your hands in the tank unless they are completely clean. Soap and perfume can be harmful to the fish.
kathy - 2012-02-07
Can I put black moor in with a comet goldfish? Will they fight? Think I put one in there with her but not long

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  • Alex Burleson - 2012-02-08
    Yes, Black Moors, and Comet Goldfish can get along. They will not fight. Goldfish generally can be placed with almost any other Goldfish.
  • Jeremy Roche - 2012-03-10
    They will get along. Make sure the take and filter is large enough for these fish. They create a lot of waste.
alan kool - 2011-08-13

Can someone please tell me how heavy 2 inch goldfish are?

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  • zach - 2011-10-10
    that is a hard question to answer because the weight of the fish does not have to do a lot with the size so much as the fish's eating habits. i have had many fish 2,3 inch's long and not one was the same weight.i would put a bowl of water on the scale and put the fish in and subtract the weight of bowl and water from the fish.
    hope this helps.
  • James - 2011-10-26
    That's easy Alan, all you need...ready? a FISH SCALE. har har
Someone - 2011-12-22
Can I put a malaysian trumpet snail in my aquarium with 1 or 2 comet goldfish?

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  • Jimmy Thai - 2011-12-30
    I would recommend apple snails if you don't mind
gwen - 2009-11-06
PLEASE HELP: my comet gold fish i bought it today and it dosent move i i think its got something wrong with it. it has a big enough tank and it has a real plant in there for oxygen and it has a snail to clean its waste i dont know what it wrong with it but i had two previous fish in there aswell and i only had one for not even a week and the other for 2 weeks and the fish i just bought i dont want it to die i am really sad i need help :( :( :) :)

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  • ivy - 2011-12-21
    I saw something to not put a plant it gives them a kind of sickness. I am so sorry in my town 600 of mine died. I loved them but the birds had a party.
  • kathy - 2012-02-07
    Give it time as he might been spawning. I got mine from the fair he did that to. I called pet store ask them about that --- they said was normel.
  • Alex Burleson - 2012-02-08
    A Comet Goldfish will require a minimum of 10 gallons, if not 20 when fully grown.

    To ensure proper advice, I would need more details on your aquarium, such as the size, temperature, and how long it has been running.

    Feel free to email me, if you wish:
  • Anonymous - 2012-02-29