3 years ago
Terry
Guest

Hi,

I've just started to keep tropical fish. I have a 70L freshwater tank. I left this with filter on for a week before buying my fish. (I now know this should have been longer).

I was advised by the shop assiostant to buy 2 Mollies.

When I put them both in the tank they were swimming around fine.

About 2 days later the female started staying at the bottom of the tank. She looks the same as when I bought her apart from the fins are not fanned out anymore.

Last night (just over 4 days after putting the fish in the tank) I checked level. Ph is around 7.8. Ammonia was very low but Nitrite and Nitrate were quite high. So I did a water change of about 25%

I checked again this morning and she was in the same spot and hardly moving.

Is there anything else I should be looking at or doing to help?

Posted on Tropical Fish
Answer
3 years ago
Jimmeh
Gold Member
Blogs: 8
Forum: 210
Votes: 13

Hi does her belly look swollen, it could be that she is preparing to have fry. mine did this for 3 days before she had the babies,

Even if you have no males the majority of female molly's brought are pregnant,

How ever I would keep up with daily PWC.

uploading a picture will help us to further determine what is wrong with your fish.

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3 years ago
Terry
Guest

Her belly is not noticeably swollen.
There is a male in the tank with her.

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3 years ago
clonlaracyclone
Gold Member
Blogs: 0
Forum: 249
Votes: 12

Hi Terry welcome to the forum
Your tank is in the early stages of the Nitrogen Cycle Use the search engine at the top of this forum page to learn more about it
It will take a few weeks for the nitrogen cycle to finish do not add any more fish until this is complete
I added some gravel and bottom dirt from a friends established aquarium I also took part of her dirty filter sponge and added to my filter, it sped up my nitrogen cycle nicely

All you can do now is regular partial water changes and keep an eye on your ammonia nitrates and PH readings until the natural spikes subside and the cycle completes Mollies are tough they hopefully will survive your nitrogen cycle Best of luck!

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3 years ago
Terry
Guest

buggar, got home and she was dead on the bottom of the tank Only had them since saturday afternoon.

Other molly is swimming round like a mad man!

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3 years ago
Terry
Guest

just checked lvl's again to see if they were still high. Trying to figure out why she died so I can save the male (who seems fine atm)
Levels between:
PH 7.4 - 7.8
Ammonia 0ppm - 0.25ppm
Nitrite 0.25ppm - 0.5ppm
Nitrate 5ppm

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3 years ago
johnarthur
Blogs: 107
Forum: 24,995
Votes: 1,341

Ammonia and nitrite should both be zero. Nitrate below 40 ppm is OK. The presence of ammonia and nitrite means the nitrogen cycle is not yet established and the aquarium is not safe for fish. It explains why the one left is going nuts: his gills are burning.

The following link has more information about the nitrogen cycle: http://www.myaquariumclub.com/the-nitrogen-cycle-for- beginners-358.html

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2 years ago
sonali
Guest

your answer is helpful. Will u please tell me what to use to keep the ammonia,nitrate,nitrite and ph in proper level?

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2 years ago
OISA
Guest

hi you can get water treatment fluids and equipment at your local pet shop. these can neutralise the acid levels. talk with the shop assistants on this matter.

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2 years ago
bree
Junior Member
Blogs: 0
Forum: 31
Votes: 1

did u put salt in the tank that helps with stress and any other prombles good luck

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2 years ago
Papermishea
Guest

I know this is a bit late but I bet it was the male Molly. Like another rooster said, most mollies come pregnant. I tell people that between platys and mollies, they're the rabbits of the fish world. That being said, when you get a boy fish, there should only be more boy fish or at least two girls. The male will wear out a single female, just trying to chase her down and mate with her. Having two females or even three keeps them from getting so stressed.

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2 years ago
marks 20 gallon tank
Junior Member
Blogs: 0
Forum: 27
Votes: 0

the same thing happend to me .. i had two molleys die and they both acted the same way as urs.. im still struggling to get through the cycle.. luckily ur not having ammonia issues..

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1 year ago
Aqua google
Guest

**** these ammonia and ph levels.. I use well water and i never have those problems.. I think your fish is infected with ich or dropsy probably.... Does it have irregular scales or a pattern of scales as if salt has been sprinkled over it ?? probably ich !!! Use salt in ur aquarium and raise the temperature 2-3 degrees ! gradually.. let me know the changes

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1 year ago
Greta1981
Champion
Blogs: 2
Forum: 1,860
Votes: 66

Hi Aqua,
This is an 11 month old post. Please don't post on old threads, since it pushes new posts down so they're not answered as quickly. No worries--I've made the same mistake.

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6 months ago
renee
Guest

Thts the ♡ breaking part mine is doing the same she has been at bottom of tank n he keeps by her. If she is suffering I wnt to put out of misery but I dont think she is. Have had them a year n all othets r fine.

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5 months ago
renee
Guest

makes me ill to think of mollies gill burning and all the morons out there who just put fish in there without knowing what they're doing and the fish suffer because of it

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5 months ago
HazletCowboy
Silver Member
Blogs: 0
Forum: 129
Votes: 3

Didn't realize this was old post... Sorry!!!

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3 months ago
Stefano
Guest

I have a simmaler problem but my other mollys died its just her.

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2 months ago
Cole Barruffi
Guest

I have a different question about if I'm giving my molly to much to eat. Yesterday I gave them a huge meal of tropical fish flakes and today they are at the bottom of the tank. Could it be possible that their digesting the giant amount of food I gave them?

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