What The Hell? Guppies Attacking Neons? :s

[Bambi211]

Hey. A couple of weeks ago i bought some guppies, and they bullied my Albino cory to death, kept nippng his fins and stuff? I was shocked cos i thought they wud get on.

Then i had a bit of a crisis with my tank with nitrates and stuff lost all my fish except 1 guppy and 1 neon tetra. And now he constantly picks on the neon tetra?

Why is this?

I thought guppies got on with most fish?

xxxx

 

[Jallen]

Hey. A couple of weeks ago i bought some guppies, and they bullied my Albino cory to death, kept nippng his fins and stuff? I was shocked cos i thought they wud get on.

Then i had a bit of a crisis with my tank with nitrates and stuff lost all my fish except 1 guppy and 1 neon tetra. And now he constantly picks on the neon tetra?

Why is this?

I thought guppies got on with most fish?

xxxx

A picture of this guppy may help solve the case...
It could be that what you thought was a guppy may be something more aggressive like a panchax or something.

 

[Bambi211]

Hmmm I just looked that fish up on google and its not the one i have

Im sure mines a guppy Maybe its just a bit of an aggressive guppy. I always get the baduns out of the group Lol

 

[Syphoniera]

I don't want to worry you, and this is only one possibility, but one of the symptoms of nematode infestation can involve behavioural change including nervousness and aggression - is the guppy sometimes unduly jumpy? Thin and/or bloated? Any stringy white poop?
This is actually a toxicity reaction, so it could also be associated with water quality or other disease issues, among other things.
But it certainly doesn't sound like typical guppy behaviour...

 

[OldMan47]

That attack does not sound like a guppy at all. Similar looking fish are gambusia affinis, called mosquito fish. If your guppy came from a feeder tank, it could actually be a gambusia. They show up quite often as feeders.