Bettas are one of the most popular fish species. Most people consider them relatively active, but this isn’t always true.

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 ...

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