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Author Topic: determining gender  (Read 1561 times)
mwolff2
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determining gender
« on: January 21, 2010, 06:49:18 PM »

Hi,
How do I determine the gender of my two goldfish? I bought them from the tank in an aquarium store. They seem to always swim together. When one swims away , the other will not be long in following.  One of them would assuedly get pregnant. Pehaps the are too young. One is much bigger than the other, more agreesive. Another question is that I bought at the same time a loach. I call him Gollum. He is constantly attatching himsef to the goldfish when it is feeding time. He attatches to the gills. Is this little sea monster trying to get a quick lunch?
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Mindemae
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Re: determining gender
« Reply #1 on: January 21, 2010, 07:08:58 PM »

At the time of spawning, male goldfish will begin to show white tubercles on their gill covers and the females will look quite bulky in the stomach area with eggs.  Sometimes only on one side.  Males tend to be slimmer than females in general.  The female will release hundreds of eggs during spawning activity and the male wil release milt (sperm) which will fetilize the eggs after they are expelled from the female.  
As far as your loach, you didn't say what kind it is.  Some loaches are tropical and therefore require a higher water temperature than goldfish.  Probably best to ask the petshop where you got Gollum from if he is ok to house with goldfish.  
« Last Edit: January 21, 2010, 07:19:33 PM by Mindemae » Logged
mwolff2010
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Re: determining gender
« Reply #2 on: January 21, 2010, 07:32:29 PM »


The larger goldfish has grown much faster than the smaller one. It seems as if the smaller goldfish is always finning the other. They seem quite enamored but that does not nessisarily mean they are opposite sexes..Do they need special conditions to lay eggs.. I just transferd them from a ten gallon to a twenty gallon tank. They seem very happy. They have taken  on quicker swimming habits. Even gollum is swimming quicklly.. I decided that to facilitate their swimming abilities, Im leaving one side of the tank obstacle free. The other side is a three holed collum which they love to swim through.. I am told that goldfish like cover,, I must disagree.. They seem to enjoy the freedom of the extra space to display their rapid swimming movements..
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Jimz
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Re: determining gender
« Reply #3 on: January 22, 2010, 10:22:28 PM »

mywolf-

I think your questions were answered concerning how to determine the gender of your goldfish. I'm not sure i understood your other comments about goldfish liking cover and then enjoying extra space, but having some decorations  will tend to make the aquarium look nicer and calm the goldfish by giving them some cover to hide.

I do not recommend mixing other species of fish with goldfish, since other species can be carriers of diseases that are harmless to them but can be very lethal for goldfish if they get infected with these diseases.  Things such as the loach attaching itself to one of the goldfish like you described can also occur  and an injury can result.
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karen
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Re: determining gender
« Reply #4 on: February 16, 2010, 03:43:14 PM »

i am new to havin gold fish an i thought one of my fish had white spot but now there are tiny bubbles around top of my tank i dont nknow if they are eggs an one fish is at the top all the time are they eggs an how does the male fertilize em
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calaguas
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Re: determining gender
« Reply #5 on: February 21, 2010, 12:58:54 AM »

thats not the egg.. it just a bubble...
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Nossie
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Re: determining gender
« Reply #6 on: February 21, 2010, 06:54:47 AM »

Karen: Goldfish lay their eggs in plants or simply on the bottom substrate (or in a spawning mop, but that's another story), so... it's a very small chance that the 'bubbles' you're talking about are eggs. But it still doesn't sound too healthy with that "staying by the surface all the time"-fish.
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finding nemo
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Re: determining gender
« Reply #7 on: February 21, 2010, 10:31:32 AM »

why is it that one of my goldfish has a black pigment on its fin and tail?
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Mindemae
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Re: determining gender
« Reply #8 on: February 21, 2010, 10:54:12 AM »

How old is your fish?
Can you post a picture?
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