Can you share freshwater diseases to a saltwater tank

  • Trying to think about this, but is it possible for some of the freshwater diseases to spread to a saltwater tank by either adding fish that can be mixed in (Mollies for example) or by sharing equipment?

  • No, there are some that are similar but they cannot live in either fully freshwater and saltwater. If you have a fish such as a Molly and it gets something, it cannot spread to a saltwater tank since the underlying species of bacteria/virus is different.


    When it comes to parasites, they can infect others from saltwater or freshwater.