
I will be listing off the common signs of a sick betta fish. Knowing your betta can be the first clue. If you have a mellow betta who is suddenly darting around the tank, or an active betta who doesn't want to come out of his cave. These may be signs of a bigger issue and can be a clue you should be looking for other signs of illness.
Bettas can't tell us when they don't feel good, so it's our responsibility in owning a betta to keep an eye out for their subtle signs of being sick. The sooner we catch these signs the sooner we can treat the cause. Timing is everything when working with bettas, it doesn't take long for a small issue to become fatal. Ideally we can avoid our betta fish getting sick at all, with healthy habitats and a clean tank with regular water changes. But even then bettas can fall ill.
Common signs of illness in betta fish;
Clamped Fins
When stressed, bettas fins will often clamp together. It looks like someone took superglue to their fins and they dried to their body. This could be a sign most any illness causing stress. It may also be the temperature in their tank, check that their thermometer is between 72 and 82 degrees. Try raising their temperature. Only raise it one degree every twenty four hour, a sudden change in temperature will shock them and cause death. If the fins look clamped and are degrading, like melted plastic, they likely have fin melt.
Degrading Fins
If the bettas fins seem to be degrading a little at a time, there are a few things it could be. If the fins look torn, split, frayed or have pin holes, check for sharp objects in the tank. Take any ornaments in question and run a pair of women's nylon pantyhose over it, if they tear or snag this is likely harming the bettas fins as well.
If their is nothing sharp in the tank and no discoloration to the fins, it may be a case of fin nipping. It will get worse overnight or when you are not with them, and it will look like small round bites were taken out of their tails. This is common in half moon tails, due to the weight of their fins weighing them down, they bite their tail to lessen the burden, however any betta can bite their fins. It may help to distract them by moving things around in their tank once and a while, to keep them from getting bored. Make sure the tank is clean to avoid infection. If you have a betta community or a female with a male the other betta may be the culprit.
If their fins are discolored, such as black tips or red from irritation, you may be dealing with fin rot. Fin rot is a bacteria that eats away at the fins and tail of a fish. If left untreated it will move on to body rot, which is very serious and can quickly become fatal if left to work it's way to this stage.
There is also a pin hole fin rot. And fin melt, which is when the fins look like melted plastic.
Darting around the tank.
Rapid movements rather than smooth swimming is a sign of distress in betta fish. Stress can be caused by illness, bad water quality etc. Bettas will also dart around the tank when spooked, make sure your bettas tank is on a sturdy surface as sudden shaking of the tank will stress them.
Hanging around the heater.
Bettas will sometimes wrap their body and tail around the heater if they are sick, or if the water is not warm enough. Check the water temperature is between 72 and 82. When raising the temperature, only raise it by one degree every twenty four hours.
Rubbing and scratching.
Bettas will rub themselves against the tank and decorations from irritation. This could be caused by external parasites. You may see white worms such as anchor worms in the tank in this case, or discolored patches on the betta. Cleaning the tank with a gravel vacuum will pick up the eggs and help reduce reproduction. Treat with parasite medication.
Floating or Sinking uncontrollably.
Bettas will lose control over their swimming and either sink like a stone or float like a cork, sometimes vertically or on their side. They will likely also have a very large underbelly. This is cause by Swim Bladder Disorder. SBD. Most likely caused by over feeding. Bettas only need two to three pellets of feed in the morning and evening. A simple treatment for SBD is fasting for two to three days, then giving them a blanched pea. Take a frozen pea from the grocery store, thaw it in room temperature tank water, peel the skin off and cut the inside into tiny pieces small enough for the betta to eat. Bettas love peas! And they are great for constipation in betta fish.
Refusing to eat.
A betta fish who doesn't want to eat is very serious, often meaning they are close to fatality. Do not panic right away though, if they skip one feeding it may be they are disinterested in the offering, the light is too dark or was turned on too short a time ago, meaning you flipped the light switch after dark and expect them to eat but they are still in night time mode. They need ten to twenty minutes in the light to adjust. If they continue to refuse food, it could be stress, internal parasites, any sickness causing them stress. If they are not showing any other signs of sickness, try enticing them with frozen blood worms, or soaking their food in seachem garlic guard. Garlic guard is also my first internal parasite medication. Let their food soak in a little water and garlic guard for a few minutes then feed it to them with an eye dropper.
Red irritation around the gills.
Ammonia burns, bright red irritated patches around the gills at first. If left untreated the ammonia will build up until the acid attacks the rest of their body, eventually becoming internal. A 25-50% water change will bring the ammonia down. Next find out what may be causing the ammonia spike. Not cleaning the tank is the most common. A smaller tank(one gallon bowls for example)without a filter will need a water change every other day. A tank with a cycled filter needs a water change once a week. Check for rotting uneaten food or dead plants which also cause ammonia build up.
Pine cone scales.
Some bettas have tiny black marks that define their scales in a way that makes it look like their scales are sticking out like a pine cone, be sure not to mix this up with an illness. There seem to be two different illnesses connected to pine cone scales. Very little is yet known about either of them in the betta community. One can be treated with clean water and patience, the other, Dropsy, is fatal. It is thought that dropsy is caused by live food. The internal organs of the fish are under attack, filling with fluid, causing the scales to protrude from the body. The best you can do is keep their water clean and hope for the best, unfortunately dropsy will kill the fish within fifteen days.
Discolored feces.
Betta droppings are normally black. If you notice it is white and stringy or yellow, it is most likely internal parasites. It can be treated by soaking their food in seachem garlic guard for a few minutes before feeding them with an eye dropper. They can also be treated with some animal dewormers like Safe-Guard, which is cheaper and easier to find then betta dewormer.
Gold dust.
It can be hard to spot in early stages, best seen with a flash light. Velvet looks like gold dust sprinkled over the bettas head, which then proceeds to the rest of the body. Velvet is a parasite that attaches itself to the fish, dropping off to lay eggs, then reattaching later. The best time to medicate is when it's fallen to the bottom of the tank, but is difficult to monitor the stages. The betta will seem to get better when it lets go, but if left untreated it will reattach later. Darkness will slow the process. Treat with parasite medication.
White dots.
White dots, which look like grains of sugar on the betta, is Ich. Or Ick. Ich is a parasite like velvet. Fortunately their are medications to fight ich. Jungle Ick Clear for example. Make sure the tank stays clean, doing a water change every day to every other day. Aquarium salt is also said be good in treating Ich.
White cotton patches.
White cotton that has attached itself to the betta. A fungus infection, which can be treated with clean water and a fungus clear medication. A fungus infection will also cause the bettas color to fade.
Swollen or Inflamed Gills
Bettas gills can become swollen or inflamed, sometimes looking irritated inside. This can be caused by bad water quality, or a bacterial infection.
Swollen eye.
If you notice one or both of your bettas eyes swollen like it will pop out of their eye, your betta has Popeye. Popeye is a bacterial infection, and can be avoided by keeping the tank clean. Do daily water changes, and the swelling should go down. Treat with antibacterial medications.
If you have a community of bettas and one or more appear sick, isolate them in a hospital tank to avoid infecting the rest of your tank.
Do not treat bettas with harsh medication until you have positively diagnosed the illness. It can be a life saver to ask other betta enthusiasts for their personal opinion. I go to; http://www.bettafish.com/
Get a picture of your betta and fill out their form under Betta Fish Diseases and Emergencies.
These are common signs of betta fish disease. Identifying the illness is first priority. Once you know what you are up against, put on your armor. Grab your weapons, gravel vacuum, fresh water, and medication. The most you will ever learn about bettas is when they are sick. Do lots of research on your enemy before treatment, there are many medications, just because it says betta or fish doesn't mean it is best. Ask other betta enthusiasts, research treatments for what you are up against. Everyone has their own idea on what's best, narrow it down to what stays consistent and make your own verdict.
Sleepless night, midnight water changes, trips to the pet store for medication, all signs of a betta fish owner with a battle to be won. Don't give up on them without a fight! With your care they can pull through.
Happy Bubble nesting!