Gold fish Killer??

I got this gold fish... I put it in my 2.5 gal aquarium with my 2guppies and molly does it bully or will it grow very big and eat the fish???

 

test the water it sounds like its over stocked and goldfish are huge waste producers

 

It is soooo small smaller than a swordtail.

 

You are over stocked with out the goldfish. Even with the goldfish being small it will still be a huge waste producer. If it lives long enough it will grow big enough to eat the other fish.
Carol

 

I got that all wrong. the molly was the killer. It was bullying the swordtail that died, used to scare the guppies and is now nipping and butting the goldfish. Hey, I isolated the molly and I don't know what is wrong with wild thing. My dead black one was soo kind.

 

Oh and the goldfish is smaller than a swordtail and only a little bigger than the guppy.
It tail fin is nice. 3 FINNED TAIL I LOVE IT!

 

overstocked

Remember the guideline for fish is 1" (adult size) per gallon and goldfish need more like 2 gallons per inch. overstocking causes aggression a lot of times.

 

Well the molly only attacks the big fishes so I think it wants so be leader!

 

The pest shop owner said that It is not about storage but something else. He said when it becomes like that, you isolate it or kill it. I but it in a one gallon ice cream container.

 

Honestly, you are overstocked. Way, way overstocked. If you want to eliminate the aggression, you will need to either upgrade to a larger tank, or return some fish. In a 2.5 gallon, I'd say, keep the guppies and return everything else. Sorry.

 

I isolated the molly and then a few days later the goldfish died of infection.(the molly ate the scales.) and the molly is still isolated. The only stuff I have left is the two guppies 11 guppy fry(see clueless breeder) and the isolated molly. I need another female!

 

that pet shop person you talked to - doesn't know much about fish. the problems are all stemming from space. There's not enough for them all and toxins & aggression result. upping the tanks to 10 gallon each would be helpful, 2.5g tanks are for 1-2 fish at best.

 

I don't think it is big. I Put the male in the molly tank and after a few seconds the molly nipped the guppy fast!

 

Honestly, I think the waste produced by the fish killed it, not the livebearers.
After almost 30 years of keeping both livebearers and goldfish, I do not think livebearers could kill a goldfish.

Think for a second, who benifits from you following their advice?
The person who is trying to sell you something or the folks here who gain nothing, if you follow their advice or not?

 

I'll second what Dino said.

It is a sad fact that there are plenty of what I would consider "Dirty business practices" in the fishkeeping hobby. As I've said before there are tons of shop-owners that would sell you fresh air if they thought you'd buy it.

It is a sad fact also that one would be better served in this world by treating everyone who is not a close close friend as though they were trying to manipulate you to do something that would benefit them.

 

Ouch. The molly is always hungry, and he- if alone is ok.