a real mollie problem - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 9 Old 03-18-2019, 07:04 PM Thread Starter
a real mollie problem

I have several mollies and all are doing well. One female that I put in a separate tank gave me many, many more mollies. But back in my main 36 gallon planted community aquarium I have one male that is causing concern. He is several months old and he is big. He is very active and chases females nonstop. But he has a strange white ring on top of his head. The center is darker but I don't think it is "hole in the head" disease which might be caused by activated charcoal. I've Googled a lot trying to find treatment but without know the cause, it's impossible. I've looked at a lot of pictures and haven't seen anything exactly like this.

He is black and the circle is white and maybe 3/16" in diameter. He otherwise seems perfectly healthy.

I'm going to isolate him with fresh water. Does anybody have any ideas?
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post #2 of 9 Old 03-19-2019, 04:41 PM
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I'm no expert, but my only real idea is to consult a veterinarian that has knowledge/experience in fish care. Better safe than sorry, but it all depends on how much you are loyal to your current fish. If there are any harmful bacteria in the water, you could try raising the temperature to kill them (bacteria) or lessen the spread.

~Sharing what I have learned with other new aquarists; not professing to be an expert.
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post #3 of 9 Old 03-19-2019, 05:18 PM Thread Starter
I don't think our vet does fish. My wife drives 50 miles just to find a vet for our birds.

I have him isolated with 100% fresh water. He is still very active and eats like a little pig. I'm going to start some treatment tonight. I think I'll start with the intent of killing a bacterial infection and if I don't see an improvement, I'll switch to fungicide.
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post #4 of 9 Old 03-19-2019, 11:28 PM
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Do daily huge water changes, keep stress minimal, aquarium salts might be a good starting place as it treats a wide variety of things. Anything that kills bacteria will kill any cycle, so major water changes with that treatment. I'm not sure why you think carbon is the root of it. Charcoal will release any toxins it's absorbed when it reaches max capacity. That's the biggest issue I have with it, as it's hard to tell exactly when it should be changed. You can always use polyfill (the chemical absorbing pad) instead. I try not to use chemical filtration personally. Rooibos tea is a great health tonic for tanks. You can brew one bag (organic only) per 10gals and add the cooled water into the tank. It's a fast way to create a black water tank too. It's packed full of great stuff and should majorly boost your fish's immunity. Cheap too :)
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post #5 of 9 Old 03-20-2019, 09:30 AM
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IME mollies do better in brackish or even full marine water.


I second trying the aquarium salt.


my .02

maintain Fw and marine system with a strong emphasis on balanced, stabilized system that as much as possible are self substaning.

have maintained FW systems for up to 9 years with descendants from original fish and marine aquariums for up to 8 years.

With no water changes, untreated tap water, inexpensive lighting by first starting the tank with live plants (FW) or macro algae( marine)

see: https://www.tropicalfishkeeping.com/a...-build-295530/
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post #6 of 9 Old 03-20-2019, 05:08 PM Thread Starter
The white ring turned out to be clearly a fungus. It became an ugly fuzzy spot.

I disinfected the fish and the tank with Halamine. Now he is swimming in salt water.

I haven't seen any trace on any of my other fish and I hope I don't. I haven't bought any new fish for several weeks and can't imagine where it came from.
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post #7 of 9 Old 03-20-2019, 08:44 PM
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Like all other animals, fish carry around diseases that are opportunistic. Giving them the best environment will keep their immune system properly functioning.
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post #8 of 9 Old 03-20-2019, 09:06 PM Thread Starter
You're right, Genos.

The fungus is actually breaking apart and falling off. If he makes a quick movement, little pieces are left floating behind. I hope this means that it will be gone in a couple days.
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post #9 of 9 Old 03-21-2019, 10:46 AM
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Originally Posted by Den Socling View Post
You're right, Genos.

The fungus is actually breaking apart and falling off. If he makes a quick movement, little pieces are left floating behind. I hope this means that it will be gone in a couple days.


This is exactly the experience I had with an albino sailfin molly. White fungusey (???? LOL) growth. Within literally hours if not minutes the fungus started flaking off after adding aquarium salt.


Glad it's working.


my .02

maintain Fw and marine system with a strong emphasis on balanced, stabilized system that as much as possible are self substaning.

have maintained FW systems for up to 9 years with descendants from original fish and marine aquariums for up to 8 years.

With no water changes, untreated tap water, inexpensive lighting by first starting the tank with live plants (FW) or macro algae( marine)

see: https://www.tropicalfishkeeping.com/a...-build-295530/
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