Why does my female betta fish have white spots after moving tanks?

Maintain pristine water quality via filtration and regular partial water changes. Use only conditioned water that is temperature matched to prevent further stress or shock. Bettas do best between 78 F and 80 F. You can try an "all in one" product, such as Lifeguard by Tetra, to treat the condition. Find it in the local Petco or online. Follow label directions carefully and remove the carbon filter insert if indicated. https://www.petco.com/shop/en/petcostore/product/tetra-lifeguard-all-in-one-freshwater-aquarium-treatment

It doesn't have the appearance of ich. He would have white spots, like grains of salt all over him. I don't see fungal growth either in the images. He does have some fin rot though. Check the water chemistry. Use a home test kit or submit a water sample for testing. Most pet stores will do this for free or for a small fee. Confirm an absence (0 ppm) of ammonia and nitrites with nitrates at 40 ppm or less. maintain temp between 78 F and 80 F. This is the optimal range for a Betta. Maintain pristine water quality as well as temperature. Continue with the ParaGuard since it is appropriate for fin rot. Follow label directions. You can also add in a bit of plain aquarium salt (NOT table or Epsom salt) as a general tonic to decrease stress, improve gill function, treat minor infection and aid in recovery. Dissolve no more than 1 teaspoon of salt per gallon of water in a cup of tank water and gently pour it into the tan. Treat with salt for 10-14 days then reassess his condition. Partial water changes can be done to reduce salinity. Use only aged or conditioned water that is temperature matched to prevent stress or shock. You may need to treat the fin rot for longer but don't use salt for more than 2 weeks in a row without a break. Also, if possible, decrease filter flow to reduce the current. Bettas prefer slow moving water. To provide an immune system boost, you can soak pellets in some garlic juice .

It could be early ich (white spot) infection or another infection (bacterial or fungal). To be safe, separate him into a quarantine tank and monitor for any change. You can treat for ich as you did it in the past if indicated. Bacterial and fungal infections have different treatments, so I would be hesitant to recommend a specific medication without more information or a definitive diagnosis. You can use plain aquarium salt (NOT table salt or Epsom salt). As a general tonic to reduce stress, increase gill function, treat minor infection of many types and to aid in recovery. This can be added to the quarantine tank at 1 teaspoon per gallon of water. Treat for 10-14 days then reassess the condition.

This could be either a bacterial infection, such as Columnaris, or a fungal infection, such as Saprolegnia. It is difficult to say without an exam or image. Either can be treated with medications found in the aquarium section of the local Petco. Look for an antifungal or antibiotic. You may even find a combination product. Follow label directions carefully and remove the carbon filter insert during treatment. Maintain pristine water quality via filtration and regular partial water changes. If an antifungal does not work, try an antibiotic or vice versa. Keep water temp between 78 F and 80 F.

Check water chemistry and filtration. Sunny may have developed a bacterial or fungal infection due to the switch in environment. Clean water is crucial to resolving infection. Perform regular partial water changes. Use only aged or conditioned water that is temperature matched to prevent further stress or shock. Maintain water temperature between 75 F and 72 F. Minor infection maybe resolved using plain aquarium salt (NOT table salt). Salt is a great general tonic. It reduces stress, improves gill function and aids in recovery. Dissolve 1 teaspoon of salt per gallon of water in a cup of tank water and gently pour it into the tank. Treat until symptoms resolve. When performing water changes, use just enough salt to treat the water being replaced, not the entire tank volume. If necessary, you can use a broad spectrum medication if symptoms persist. Look in the aquarium section of the local pet or fish store for products such as Kanaplex, Maracyn or Lifeguard by Tetra. Follow label directions carefully and remove the carbon filter insert if indicated.

This could be bacterial infection. Most minor infection can be managed or resolved by providing pristine water conditions and a tiny bit of plain aquarium salt (NOT table or Epsom salt). Perform daily partial water changes, about 30%, using aged or conditioned water that is temperature matched to prevent further stress or shock. Dissolve about 1/2 teaspoon of plain aquarium salt per gallon of water into the tank. Treat for 10-14 days then reassess their condition. If necessary a broad spectrum antibiotic can be found in the aquarium section of the local Petco. Follow label directions carefully. As an aside, Bettas do best between 78F and 80F. Cory cats prefer cooler temps, between 60F and 75F. They do not do well at temps that Bettas are kept in, eventually they will become stressed which can lead to infection. Consider separating one or the other into a tank with the appropriate water parameters.

Maintain pristine water quality via filtration and regular partial water changes. This is the cornerstone for treatment and recovery. Plain aquarium salt (NOT table or Epsom salt) can be used as a general tonic to reduce stress, improve gill function, treat minor infection and aid in recovery. Dissolve 1 teaspoon of salt per gallon of water in a cup or two of tank water and gently pour it into the tank. Treat for 14 days then reassess the condition. If necessary, a broad spectrum antibiotic can be used concurrently. Find one in the aquarium section of the local Petco. Follow label directions carefully and remove the carbon filter insert during treatment if indicated.