Owners should also watch out for infection and diseases such as fin rot, dropsy, and swim bladder disease. While Betta fish can tolerate dirty water for a short period, long exposure can cause ...

Here are some common diseases and issues that could cause a betta fish to rest at the tank’s bottom: Fin rot is a typical ...

Fin Rot Typically Affects Long-finned Fish Fin ... Yet, this condition is commonly seen in long-finned fish, such as betta fish, goldfish, and angelfish. It can also be seen in koi.