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one of my mollys died it was 7 months old.. thats not the only prob one of my adult mollys igot 12 months ago doesnt look well at all it rests on the rocks at the bottom so i put it in a breeder net.when i feed him he goes to the top but struggles to swim right(floating almost upright) did a water test all ok.
if i've made sense please help...

3 mollys
10 baby mollys(3 mths)
10 neon tetras
2 guppys
140 ltr tank

Hi,
I'm sorry to say, but you are "mixing apples and oranges"
with your variety of fish.
Mollies are a brackish water fish. You must add salt to the
water to where it is nearly as salty as the ocean.
The other fish are freshwater fish and never come in
contact with salt or brakish water. You will need two
tanks for that variety of fish.

Give the mollies their own tank and adjust the water using
non-iodized salt, or better yet, marine aquarium salt, so
the specific gravity is 1.002 - 1.005
http://www.aquariacentral.com/faqs/brackish/FAQ6.shtml
Any LFS that sells saltwater fish will stock
a hygrometer for measuring the specific gravity of a
liquid.

Another link for mollies:
http://www.flmnh.ufl.edu/fish/Gallery/Descript/SailfinMolly/SailfinMolly.html

Frank


-->>> The Confidence of Amateurs, is the Envy of Professionals <<<--

Sorry to hear about your fish. I had a few mollies before never did it to me... We the scales proturding liek a pine cone almost? If they were/are it might be dropsie....

10G- 6 Zebra Danios, 1 Upside Down Catfish
20G- 1 Goldfish
72G(maybe95)- Need Stock suggestions

All I can say is I fully back up what Frank has told you to do. In the wild some live bearers have been caught in the ocean far from shore. Also I think they prefer the "Correct" salt for general health and breeding.

That certainly is not the best condition for your Tetras.

If you LFS said they would be OK I suggest you start looking for a better LFS who can help you.

Have a look in [link=My Profile] http://www.fishprofiles.com/forums/member.aspx?id=1935[/link] for my tank info

Look here for my
Betta 11Gal Desktop & Placidity 5ft Community Tank Photos

Keith

Near enough is not good enough, therefore good enough is not near enough, and only your best will do.
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all my tetras are ok my 2 mollys are fine.i lost a male guppy tonight and a 8+4 month baby mollys today the guppy was swimming at the top of tank on its side and side to side the molly was just spiraling around i think it may be swimbladder if it is any recomendations on treatment please.

How about giving results of the water testing you did? How much is the temperature?

Can you give some more detailed information on the sick fish, or is the weird smimming all you got?

Molly's aren't brackish water fish.. they do prefer a small dding of salt to the water, but not at lot. And do do the guppys. They surely can live for a little while in saltier water (explanation for the fish found in the ocean), but they won't survive a long time. Not the period they'd survive in normal fresh water..

**Never get so busy making a living that you forget to make a life**