Report from our veterinary:
Lumpfish are territorial
When several thousand individuals are put out in the same net cage it’s important with proper feeding strategy.
The way you feed is crucial to give everyone access to food.
Lumpfish can get cold shocked when being put out
Even though lumpfish like cold temperatures they may die from rapid temperature change.
Communication with the supplier is important to clarify i.a. temperature differences before putting out lumpfish.
State of health at put out is crucial for the effect.
The lumpfish will never be a better louse eater than its health and robustness when being put out. Quality control of fish, documenting state of health plus feedback to the supplier is important to continuously improve the process.