Aquarium Doxycycline

Browse our selection of Aquarium Doxycycline, a broad-spectrum tetracycline antibiotic used to treat a variety of bacterial infections in fish. Doxycycline is effective against both gram-positive and gram-negative bacteria, as well as some intracellular bacteria.

Doxycycline can be used to treat conditions such as:

  • Fin rot
  • Tail rot
  • Gill disease
  • Bacterial hemorrhagic septicemia
  • And other susceptible bacterial infections

If you’re unsure if doxycycline is the right treatment for your fish, we also offer other types of fish antibiotics, including:

Here are some specific Doxycycline products we carry:

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