My gold fish seems to be hyper active all the time ....they are always hungry ...I know that they dont feel full and they eat all the time ....but not like that ...they eat and eat and eat ....and they move all the time ...I moved them into a new tank and they became hyper active ...any ideas ...?? please tell me

And did you cycle the new tank?

What size is the tank?

How long established?

How many fish?

NH₃,NO₂-,NO₃- levels please

I have 2 ID shark ...2 bala shark ...2 comets ...4 fantanyl ..2 black moores !

I agree with scrivens. You HAVE to rehome your commons and a few of the other fish, obviously. Long-bodied goldfish shouldn't be kept in tanks smaller than 4 feet long. You should also know that goldfish are best kept in a one-species setup, so no sharks of any kind to be with your goldfish. You have to make a choice here, which fish do you want to keep?

Hi and welcome to the forums!

Seem's like you have stocked with fish that will grow too big for your tank size.
As already mentioned fancy goldfish need at least 40 litres each, common goldfish require ponds or very large aquaria (a minimum of 6 foot).
I was not familiar with the two sharks you have but a brief bit of research revealed that your bala sharks, need a tank of massive proportions, sources vary with recommendations ranging from 472 litres up to 900 litres.
I am not sure on what other shark type's you have, but I would suggest you look into them as well.

I can appreciate that finances might not allow you to buy suitable aquaria for the fish (especially when it's huge tanks), so consider the option of returning them to the store where you brought them or find a new home for them, perhaps there is a fish keeping society in your area, of people who have the space for the fish?

The fish acting hyper active, is basically due to bad water quality or an un-cycled tank. As already mentioned water changes will help. You may have to increase the water changes for a while, I re call my goldfish acted in a similar fashion and I found daily water changes helped, so perhaps do that until the fish's behaviour ceases? If test kits are un-available to you at the moment, then you could go by their behaviour instead

No offense, but I highly doubt that they don't sell test kits in the pet shops nearby.
If all else fails you could just buy a packet of test strips, they won't be as accurate, but they'll help you. I also suggest you read up A LOT on fish-keeping in general. I mean the basics: Setting up a tank, maintaining a tank, stocking it, feeding the fish etc.
You have a bunch of highly incompatible fish in an incompatible tank, a little bit of background research would have helped you avoid this problem altogether

Btw Im still an amateur ...I wanna know what does tank cycling mean ...?? thanx guys for helping

Dude, what part of "You cannot keep these fish" is it you don't understand? |:
Don't start asking about decorations when you are AWARE that your tank is unsuitable, adding some little pebbles or a plastic shipwreck is NOT going to make the tank bigger.

I understand it's hard to imagine, you probably just see these happy-looking BABY fish for now, but in a month, I can guarantee that you will have lost most of them to disease, ammonia poisoning and stunted growth. There is a reason there are minimum tank sizes mentioned for certain species of fish.

Will you just take these fish back to the shop already? At least give them a chance to live in a proper home when yours clearly isn't.

Mohannad, I agree with the others. You need to find suitable homes or take the fish back to the pet store as soon as possible. Don't wait for them to 'grow a little bigger', that's not going to help when your tank is already overstocked.

Using an aquarium stocking calculator -aqadvisor.com- it said the following;
"Warning: Bala Shark is not recommended for your tank - it may eventually outgrow your tank space, potentially reaching up to 30.5 cm.
Warning: At least 5 x Bala Shark are recommended in a group.
Warning: Comet Goldfish is not recommended for your tank - it may eventually outgrow your tank space, potentially reaching up to 25.4 cm.
Warning: Fantail Goldfish is not recommended for your tank - it may eventually outgrow your tank space, potentially reaching up to 20.3 cm.
Warning: Black Moor Goldfish is not recommended for your tank - it may eventually outgrow your tank space, potentially reaching up to 25.4 cm


Your tank is too small - it will require massive amount of frequent water changes each week!

Your aquarium stocking level is 414%.
Your tank is seriously overstocked. Unless this setup is temporary, you should consider a larger tank."

Wasn't sure on what your other shark were, but I imagine stocking would go up to 500% or possibly even 600% with two extra sharks.

As for cycling... it is basically the process in which bacteria develop to deal with the waste produced by the fish that live in the aquarium.
So to begin with, ammonia is produced by the fish, which is extremely toxic to fish, bacteria develop to deal with this and eventually the ammonia level will go down, this is because bacteria are developing which convert the ammonia into nitrites.
Now nitrites is pretty bad for fish as well, so again bacteria will develop to convert the nitrites into nitrates.
Nitrates are okay as long as they are in a low concentration, usually below 40ppm is best. This is why weekly water changes are necessary - to keep the nitrates in a cycled tank in check.

Most people recommend a fishless cycle, as it is safer than having a fish-in cycle.
A fish-in cycle isn't impossible, it's just a lot of extra work and more hazardous for the fish. The water will need testing, so you know what levels ammonia/nitrite/nitrate are at and changing water on a daily basis in some cases is necessary, to keep the ammonia and nitrite as mentioned above, under control.

Maybe try looking on the filters themselves? They might have a model number or something similar?
I find the website really useful, but of course, researching individual species for more specific details and care

Vicky, you can always get a large storage container ( several hundred ltrs) and use a small hang-on filter (Link is not visible to guests. Please register to view.)

after one week daily 50% water changes ...the water is crystal clear ...but the fish remains the same degree of activity ..?? any clues ...?? I have 3 filters .., may be the water flow is tough and making them swim all the time ...any clues !

You're not even reading our posts. We have told you already what you need to do and what makes them so "active".

The aquarium stocking calculator is basicly saying you need a 100-105 gallon tank to hold all these fish which aren't all compadible.