Killer Guppy - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 6 Old 12-26-2010, 08:09 AM Thread Starter
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Killer Guppy

I got 3 guppies on Thursday 23rd December, but from the start the lage female was quite agressive and nipping tails and forcing itself to all the food. I was tatching her over the past few days and Friday she was nipping at tails and head butting my pregnant guppy in the stomach, she was even attacking my neon tetras and nipping their fins.
The last straw was on Saturday when she really started harrassing my guppy and also terrorising the male guppy and also my neon tetras, she attacked my little neon and its scurried to the bottom corner of the tank out of the way. I watched it has night and and it was breating very fast and looked pretty much alone.

I isolated the female guppy into a net tank to keep it under control.

This morning, Sunday I found my little Neon Tetra floating on the surface, dead, the killer guppy is to blame.

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post #2 of 6 Old 12-26-2010, 02:59 PM
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I love the poster, sadly just like in humans some fish will be born deranged homicidal maniacs, the only thing you can really do about it is to isolate to another tank or to put the fish down before it takes out the rest of your stock.
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post #3 of 6 Old 12-26-2010, 03:07 PM Thread Starter
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Since I posted this earlier, the male guppy has died too.

I was watching him for about 20 minutes today and at 2.45pm he just turned on his side and went upside down and died before my eyes.

Since 3pm on the day i bought him, he has stayed in the same position at the top of the tank, and not moved from that position at all.

he did not even move for the females, and his thing!! does not wag about when there about, maybe he is still too young!
See the video of him:
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Last edited by gordonuk; 12-26-2010 at 03:09 PM.
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post #4 of 6 Old 12-27-2010, 04:58 PM Thread Starter
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I put the female guppy back in the main tank after punishment in the isolation tank but The killer guppy has struck again, it attacked another neon tetra, it tried to bite its head off. I have had to put it in the isolation net again.

why is this an evil fish?????
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post #5 of 6 Old 12-28-2010, 05:12 PM
I had to get rid of several guppies because of this trait. I marched them right back into the petstore and made them exchange the fish. I've heard it can be quite common in guppies. Imbreeding maybe? I'd take her back.

8 platies born 5-10-10
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post #6 of 6 Old 12-29-2010, 08:11 AM Thread Starter
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The killer Guppy is now gone, took it back to the LFS but did not get a refund or an exchange. While I was there bought 4 new platy females so my male can keep busy!, and 2 other fish I have no idea what they are.

Pics of the new platy on the blog, but here is the fish i cant remember name of. It is the long fish thats in the gravel.
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