Why is my betta's belly swollen and why does he keep sinking?

Question

My betta has a swollen belly. He is not being over fed, he gets 2 fish pellets daily. Another behavior he displaying is sinking to the bottom of his tank every now and then. What is wrong with him? How do we help him? (For the photo he was temporarily placed in a cup). Pet's info: Fish | Betta | Male | unneutered | 1 year old

Todd Cecil · Accepted Answer

Thanks for reaching out about Jeff and including photos. A swollen abdomen can be the accumulation of fluid, possibly due to diseases of the gills, heart, liver, lungs or something internal producing fluid. Sinking to the bottom, probably due to the fluid on the abdomen preventing the swim bladder from filling, therefore affecting buoyancy. First, test and correct water quality, as even small problems can lead to gill damage and the influx of water into the body, therefore the fluid. Adding non-iodized salt can decrease the water gradient into the body, relieving some symptoms but is not a cure. Salt from the pet store should have a dose. A veterinary visit is needed to assess if you want a more definitive answer. Good answer.

Why is my betta's belly swollen and why does he keep sinking?

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