Fancy Goldfish being bullied?

[Demi-Leigh Lewis]

Hiya, so this is only happened recently.

My two black moors seem to be ganging up on my other fancy goldfish for no reason. I literally just caught them squeeze him between two small rocks and his tail looked ripped and torn. They will get underneath his belly and swim vigoursly at him and chase him round the tank.

He’s eating like normal and that.

I don’t know what to do?

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[Demi-Leigh Lewis]

Now my black moors are at each other? I’m so confused?


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[Lunar Jetman]

What size is the tank you're keeping them in?

 

[Demi-Leigh Lewis]

What size is the tank you're keeping them in?

They’re 3 and all in 100l tank with temp at 25.0 exact. 2 hair pumps and U2 furval filter


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[Moony42]

I hate to break it to you but you should probably move your fancy goldfish to another tank until it heals and then remove your black moor

 

[Colin_T]

can you post pictures of all the goldfish?
you might have male black moors that are trying to breed with the other one.

 

[Demi-Leigh Lewis]

can you post pictures of all the goldfish?
you might have male black moors that are trying to breed with the other one.

Are these photos okay?



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[FishGuest5123]

They’re young but sounds like they are spawning. The males will push the females against things to encourage them to release eggs of which the males will then swim over and fertilize. If successful, you’ll find little clear balls attached to plants and such. Those are the eggs. If they are clear then they are fertilized and fry will hatch in 2-3 days. If not fertilized, they will have a brownish tint and grow fungus in a day or 2. You’ll want to get those out to prevent ammonia rising.

 

[Colin_T]

Yes the photos are fine.

They don't appear to be showing any breeding spots so I doubt they are trying to breed with the other fish. However, young males will sometimes chase females and try to breed with them, even when they don't have breeding spots. Breeding spots are small white dots that male goldfish develop when the weather warms up. The white dots appear on the side of the gill covers and pectoral (side) fins.

The water looks milky cloudy. This is normally caused by uneaten food rotting in the tank, or a new filter that hasn't developed properly yet.

Do a 75% water change and gravel clean the substrate every day for a week. Make sure any new water is free of chlorine/ chloramine before it's added to the tank.

Check the water quality for ammonia, nitrite, nitrate and pH. Post the results (in numbers) here.

Remove any shape rocks and ornaments and make sure there is nothing for the fish to get stuck behind. Put some plants in and if it continues to get worse, separate them.

 

[Demi-Leigh Lewis]

Yes the photos are fine.

They don't appear to be showing any breeding spots so I doubt they are trying to breed with the other fish. However, young males will sometimes chase females and try to breed with them, even when they don't have breeding spots. Breeding spots are small white dots that male goldfish develop when the weather warms up. The white dots appear on the side of the gill covers and pectoral (side) fins.

The water looks milky cloudy. This is normally caused by uneaten food rotting in the tank, or a new filter that hasn't developed properly yet.

Do a 75% water change and gravel clean the substrate every day for a week. Make sure any new water is free of chlorine/ chloramine before it's added to the tank.

Check the water quality for ammonia, nitrite, nitrate and pH. Post the results (in numbers) here.

Remove any shape rocks and ornaments and make sure there is nothing for the fish to get stuck behind. Put some plants in and if it continues to get worse, separate them.

I think it’s because of the uneaten food, I fed them a bit much today I think? I mean they ate it all in less that 10 minutes

And I did this as I have work soon and won’t be fed until tomorrow at some point. Also I think its the peas too as they tend to make the water tad cloudy as I cut them up tiny and then it clears out via filter the water.

I tend to give them peas once in every couple of weeks because of what it does to the water. [emoji3526] but they love it!

Results

Ammonia = 0
Nitrite and Nitrate = 0
PH = 7.0/7.5
KH = 120
GH = 180

The tank had water change 4 days ago roughly 10/15 percent.


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[Colin_T]

You want the fish to eat all the food in less than 1 minute. They can go for days without food so you are better off under feeding rather than over feeding.

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You should do bigger water changes. I recommend doing a 75% water change and gravel cleaning the substrate once a week. You do water changes for 2 main reasons.
1) to reduce nutrients like ammonia, nitrite & nitrate.
2) to dilute disease organisms in the water.

Fish live in a soup of microscopic organisms including bacteria, fungus, viruses, protozoans, worms, flukes and various other things that make your skin crawl. Doing a big water change and gravel cleaning the substrate on a regular basis will dilute these organisms and reduce their numbers in the water, thus making it a safer and healthier environment for the fish.

If you do a 25% water change each week you leave behind 75% of the bad stuff in the water.
If you do a 50% water change each week you leave behind 50% of the bad stuff in the water.
If you do a 75% water change each week you leave behind 25% of the bad stuff in the water.

Fish live in their own waste. Their tank and filter is full of fish poop. The water they breath is filtered through fish poop. Cleaning filters, gravel and doing big regular water changes, removes a lot of this poop and makes the environment cleaner and healthier for the fish.

 

[Demi-Leigh Lewis]

So I’ve been doing this weekly, should I keep it up weekly change but do a higher amount of water change as you have suggested?

And within the 15 percent water change I was doing I did a gravel clean as it takes the water with the removal of cleaning the gravel with this little hand pump thing I got xx


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[Essjay]

Goldfish are messy fish (they generate a lot of waste) so they need big water changes. You need to change around 75% a week and do a gravel clean at the same time.