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Old 01-09-2010, 02:52 PM   #1 
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Join Date: Jan 2010
Location: Alberta, Canada

I changed my bettas water 2 days ago (small tank) and I noticed that it became lethargic, and it would not eat. Now, when i got up this morning, I noticed that it has one GIANT eye..ewwww! What could have caused this and how do I fix it fast?? (Oh, are snails ok to be with them??)

She also looks 'crooked'..her body isnt prior health problems though.

Last edited by dramaqueen; 01-09-2010 at 03:13 PM.
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Old 01-09-2010, 04:17 PM   #2 
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Join Date: Dec 2009
Location: East Tennessee
How big is the "small" tank? 1 gallon, 2, 3?

How often do you change the water?

Do you have a heater? If so, what is the temperature?

Do you have a filter?

Do you have live plants?

How long have you had the fish?

Have you done a water test? Do you know your Nitrates, Nitrites and Ammonia levels?

You said you just changed the water in your tank. Did you put the fish in right away or let the water sit and let the fish float in a bag or cup to get accustomed to the water?

Do you have an air pump in your tank?

You said that he seemed bent. A picture would help.. but this might be a symptom. What do you feed him and how often? Does he seem bloated or too thin?

Are there any other signs on the fish? Red spots on the body or fins?

It's really hard to figure out what caused the pop-eye in your fish without this information. There are a LOT of causes for pop-eye, and medications won't work for all of them.
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Old 01-09-2010, 10:40 PM   #3 
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Join Date: May 2009
Location: Canada
how often do you normally change the water?

The questions that mollyjean posted are extremely important to know in this case. Popeye can be cause by bacteria or even the water quality. You should try to answer all of these so we can better understand the situation

The most common cause of popeye is environmental due to excess gases in the often do you change your water i a VERY important question in this case. Ammonia is not the only gas that is harmful for fish, in popeye it is often caused by excess nitrogen in the water. Too much gas pressure will cause bubbles to form in the blood and behind the eye (causing the protrusion). To fix popeye due to nitrogen change 100% of your water and keep changing it more frequently than you do until the popeye goes away. You may not have noticed it start to swell until it got really large.

now if this does not help than it is more likely that the popeye is due to bacteria, in which case there are medications that can be bought to treat this symptom. but try to figure out if the cause is environmental first! As treating with medication can be stressful and it lowers the available oxygen in the tank for your fish.

Injury can cause popeye...any other fish with your betta that may like to nip at eyes? or perhaps really sharp tank decorations?

A picture would really help especially to try to figure out the body curling cause

P.S the snail should be fine with your betta, unless you have a betta that likes to eat snails, if it's a bigger snail it should not do that though
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help!, popeye, sick

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