Fish Probiotic Bacteria for Infection Control and Growth

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Solution Overview

Problem

Fish farming faces challenges with high mortality rates and reduced growth due to bacterial infections, particularly from pathogens like Aliivibrio salmonicida, Aeromonas salmonicida, and Vibrio anguillarum, leading to economic losses and quality issues in farmed fish.

Innovation Solution

Administration of novel probiotic bacteria species, including Aliivibrio njordis, Aliivibrio balderis, Aliivibrio nannie, Psychrobacter piscimesodermis, Psychrobacter piscimesenchymalis, Psychrobacter piscisubcutanea, Pseudomonas salmosubcutaneae, Pseudomonas salmosubpectoralis, and Pseudomonas salmointermuscularis, via topical, oral, or injection methods to increase growth and prevent infections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If antibiotics and chemical control agents are used to control infections, then infection control is improved, but environmental pollution and antibiotic resistance development worsen

Engineering Contradiction:

Improveinfection controlVSAvoidenvironmental pollution and antibiotic resistance

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent uses probiotic bacteria (beneficial microorganisms) to convert the harmful effect of pathogenic bacteria into a benefit by outcompeting them for resources and space. The probiotics establish themselves in the fish gut and surrounding environment, preventing pathogen colonization through competitive exclusion, thus controlling infections without using harmful antibiotics or chemicals

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent introduces probiotic bacteria as an intermediary substance that mediates between the fish and pathogenic bacteria. These probiotics act as a biological barrier and competitive antagonist, interfering with pathogen attachment and growth without directly killing them, thus providing infection control while avoiding the harmful effects of antibiotics

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If fish are contained at high concentrations to improve productivity, then farming efficiency is improved, but infection risk worsens

Engineering Contradiction:

Improvefarming efficiencyVSAvoidinfection risk

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent employs probiotic bacteria that provide self-service protection to the fish population. The probiotics continuously colonize the fish gut and surrounding water, providing ongoing immune support and pathogen protection without requiring external intervention. This self-service mechanism allows high-density farming by naturally suppressing infections through the persistent presence of beneficial bacteria

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent applies probiotic bacteria in advance to fish before they are exposed to pathogenic infections. By establishing probiotic colonization early in the fish lifecycle or before challenging conditions arise, the fish gain preemptive protection against pathogens, enabling high-density containment without increased infection risk

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12458042B2Probiotic bacteria for fish

Publication Date: 2025.11.04 PREVIWO AS

AI summary

The present document is directed to probiotic bacteria and their use in fish farming for increasing the weight of fish and for treating and/or preventing a microbial infection of the fish. The bacteria are species within the Aliivibrio, Psychrobacter and Pseudomonas genera.