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Old 09-12-2011, 06:42 AM   #1 (permalink)
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Default Sudden aggression in male guppy
I just noticed that one of my male guppies has all of a sudden become very aggressive. He's chasing everyone and it seems like maybe he's chasing them away from food. I assume this sudden change in behavior means there's something wrong with him. Anyone know what that might be?
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Old 09-12-2011, 08:55 AM   #2 (permalink)
Pleco n bn breeder n BOSS
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Default Re: Sudden aggression in male guppy
He's probably gotten the urge to mate and will continue to chase everything trying to mate with them.
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Old 09-12-2011, 05:52 PM   #3 (permalink)
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Default Re: Sudden aggression in male guppy
needs a female
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Old 09-12-2011, 06:26 PM   #4 (permalink)
....has no life....
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Default Re: Sudden aggression in male guppy
They will try to mate with everything - normal.
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Old 09-13-2011, 03:48 AM   #5 (permalink)
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Default Re: Sudden aggression in male guppy
Are the other fish getting stressed? If not then don't worry about it. Having plenty of decor and plants will help to give the other fish somewhere to get away from him.
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Old 09-13-2011, 07:36 PM   #6 (permalink)
Dude.... wait..... what?
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Default Re: Sudden aggression in male guppy
Agreed! Probably wants to mate.

What size is the tank and what are the tank mates?
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