Pregnant Fish??

[MrSlim3ball]

Hi there
I have had an aquarium now for just over 3/4 of a year. I have had 4 goldfish die in it, 2 common goldfish from finrott when my filter broke over a holiday, and the other 2 which died when I introduced them into the tank which had too many nitrates and ammonia.
It has 6 fist at the moment:
3 zebra danios
1 panda goldfish
1 common goldfish
1 other kind of goldfish
(I have no idea of the genders of the above fish)

Recently, the common goldfish has swelled and is behaving very lethargically. I have. Not seen it eating the food I give once a day.
Is there any possibility that my fish is pregnant (given I don't know it's gender) and if it is, what should I do? Below are some pictures.

[Tiari]

What are the test readings for ammonia, nitrite and nitrate?

What size tank is this? Common goldfish need a huge tank, and considering how man you have, my guess immediately would be that the tank is way undersized for them.

[ScottishFish]

+1 to the above, sounds like too many fish, not enough space. With goldfish being very heavy polluters I reckon you fish is suffering the ill effects of poisoning. Be it too high ammonia, nitrates etc..

[imma24]

++1 - how large is your tank and what are current water parameters - swollen, lethargic fish points to a potential problem, not pregnancy.

[Joonkun]

from the looks of the scales im going to say this looks more like dropsy then pregnancy. additionally your tank is probably way to small as common goldfish grow to be 12+inches. if you dont have atleast a 55gal+ your fish are in an inadquate enviroment. goldfish are notroiously dirty as well. is your filter atleast 2x the size of your tank? additionally zebra danios need larger tanks them normal sinze they are active swimmers, and should be kept in a larger school then 3.

[MrSlim3ball]

Well, the size of the goldfish itself is about 8cm, and the tank size is 30 - 35 litres (not too sure). I also dont know about the results for the ammonia and nitrates, just that they were too high. That is all the garden centre said. The man serving me gave me these clear balls about 1 cm in diameter called pure aquarium (somewhere below) to be applied by 3 a week. He said these would reduce the nitrate and ammonia level for my fish to be safe in. I am applying these at the recommended dosage given on the package.

The filter (also in a picture below) is nowhere near 2x the size of the tank, but it was fine for 6 months before now.

Finally, we do have a garden pond about 1 meter depth in the middle, and 2 meters in diameter. Obviously from the above suggestions my tank is too small, but in my fishes current state of unrest, when would someone suggest putting the fish in the pond, if to put him in the pond at all, and whether the others should follow.

Below probably in more than 1 reply, i have attached photos of all 3 goldfish together, tank, filter, and pure aquarium balls.

btw thanks for all the help so far :)

[MrSlim3ball]

Also, ScottishFish, if my fish is ill, what would you reccomend me do??
Thanks again :)

[ldoerr]

Your tank is probably ~ a 10g tank. That is WAY too small for even 1 goldfish, let alone 3. I would recomend that you do a few LARGE WCs. You should be doing a WC every day until you can get the fish in the pond.

[MrSlim3ball]

ok. thanks. so when should the fish be getting into the pond, when is is healthy or asap?
Thanks again :)

[Lady Hobbs]

Please read the cycling links in my signature and the size that goldfish are supposed to grow to! Goldfish live many, many years. When they continue to die in your tank, then you need to start stocking the tank correctly instead of just buying more.