Clamped fin/Partial paralysis

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Marmite Mut

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We have a female Guppy that has a clamped tail and partial paralysis. She is swimming and feeding okay. None of the other fish in the tank seem to be effected. Is this something as simple as a stroke or should I start a form of treatment just in case? Any recommendations?
 
Can you post a picture and short (20 second) video of the fish?

How long has the tank been set up for?

Have you tested the water for ammonia, nitrite, nitrate, pH & GH (general hardness)?
if yes, what were the results in numbers?

How long have you had the fish for?
What other fish are in the tank?
Have you added any new fish or plants in the last 2 weeks?

How often do you do water changes and gravel clean the substrate, and how much water do you change?
Do you dechlorinate the water before it is added to the tank?

How often and how do you clean the filter?

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The fish could have a bacterial or protozoan infection, or the water is too soft or the pH is too low for the fish.
Guppies need hard, slightly alkaline water with a GH above 200ppm and a pH above 7.0.

If the water is too soft or the pH too low, you can add some Rift Lake water conditioner (available from pet shops) to increase the hardness and pH. However, it also depends on what else is in the tank. If you have tetras and angelfish you don't want to raise the pH and GH too much above 200ppm for GH and don't get the pH above 7.6.

A protozoan infection will probably show up as a cream, white or grey film over parts of her body and fins.

A bacterial infection will normally show up as red patches on the body and fins.

You can add rock salt (often sold as aquarium salt), sea salt or swimming pool salt to the aquarium at the dose rate of 1 heaped tablespoon per 20 litres of water. If there is no improvement after 48 hours you can double that dose rate so there is 2 heaped tablespoons of salt per 20 litres.

If you only have guppies in the tank you can double that dose rate again so you would add 2 heaped tablespoons per 20 litres and increase it after 48 hours if there is no improvement so there is a total of 4 heaped tablespoons of salt per 20 litres.

To work out the volume of water in the tank:
measure length x width x height in cm.
divide by 1000.
= volume in litres.

When you measure the height, measure from the top of the substrate to the top of the water level.

There is a calculator/ converter in the "How To Tips" at the top of this page that will let you convert litres to gallons.

Wipe the inside of the glass down, do a 75% water change and complete gravel clean. And clean the filter before treating.
 

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