Beneficial effects of medicinal plants in fish diseases

Deyan Stratev*, Georgi Zhelyazkov, Xavier Siwe Noundou, Rui W.M. Krause

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

83 Citations (Scopus)


Fish are constantly in contact with pathogens inhabiting water. High population density as well as poor hydrodynamic conditions and feeding lead to an increased sensitivity towards infections. In order to prevent major economic losses due to diseases, various medications are used for treatment and prevention of infections. The use of antimicrobial drugs in aquacultures could lead to emergence of resistance in pathogenic microorganisms. Alternatives are being sought over the last few years to replace antibiotics, and medicinal plants are one of available options for this purpose. These plants are rich in secondary metabolites and phytochemical compounds, which have an effect against viral, bacterial, and parasitic diseases in fish. Their main advantage is their natural origin and most of these plants do not represent threat for human health, the fish, and the environment. The goal of this review is to present information on the treatment of viral, bacterial, and parasitic diseases in fish through medicinal plants, with focus on the mechanisms of action of the identified secondary metabolites, fractions, or plant extracts.

Original languageEnglish
Pages (from-to)289-308
Number of pages20
JournalAquaculture International
Issue number1
Publication statusPublished - 1 Feb 2018
Externally publishedYes


  • Fish diseases
  • Medicinal plants
  • Treatment


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