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Bacillus spp. in Fish Farming: Enhancing Fish Performance, Health and Farming Practices.

Yaoying Lu1, Natasha B Bambridge1, Xiaojing Chen2

  • 1Institute for Biomedicine and Glycomics, Griffith University, Parklands Drive, Gold Coast, 4222, Queensland, Australia, griffith.edu.au.

Aquaculture Nutrition
|May 18, 2026
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Summary
This summary is machine-generated.

Bacillus probiotics enhance aquaculture by improving fish growth, health, and water quality. Further research into lesser-known Bacillus species and their mechanisms is needed for sustainable aquaculture.

Keywords:
Bacillus sppaquaculturefeed supplementsfish farmingprobiotics

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Bioprospecting of Extremophilic Microorganisms to Address Environmental Pollution
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Characterization of a Pathogenic Escherichia coli Strain Derived from Oreochromis spp. Farms Using Whole-Genome Sequencing
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Bioprospecting of Extremophilic Microorganisms to Address Environmental Pollution
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Published on: December 30, 2021

Area of Science:

  • Aquaculture
  • Microbiology
  • Animal Science

Background:

  • Aquaculture is vital for global food security, facing challenges in meeting rising seafood demand.
  • Probiotics offer a sustainable solution to improve fish health and farming conditions.
  • Bacillus species show promise as effective probiotics in aquaculture.

Purpose of the Study:

  • To review the potential of various Bacillus species as probiotics in fish farming.
  • To highlight the benefits of Bacillus probiotics on fish growth, health, and water quality.
  • To identify knowledge gaps and suggest future research directions.

Main Methods:

  • Literature review of studies on Bacillus probiotics in aquaculture.
  • Analysis of evidence for Bacillus species' effects on fish performance and environment.
  • Identification of commonly studied and underexplored Bacillus species.

Main Results:

  • Bacillus probiotics improve feed efficiency, gut health, and immune responses in fish.
  • These probiotics contribute to better water quality through nutrient cycling and pollutant reduction.
  • Bacillus subtilis is the most studied species, while others like B. licheniformis and B. amyloliquefaciens are less explored.

Conclusions:

  • Bacillus probiotics offer significant benefits for sustainable aquaculture.
  • Further research on diverse Bacillus species and their mechanisms is crucial.
  • Integrating multi-omics approaches will optimize probiotic development for aquaculture.