Size Differences in Personality Profiles of the Cunner Wrasse (Tautogolabrus adspersus)

Individual animals, including fish, often differ consistently in their behaviours, which is known as personality. An individual’s values on the five axes of personality, are activity, aggression, anxiety, boldness, and sociality, come together form syndromes. The major syndromes, proactive or reactive, characterize an expected behaviour. cunner wrasse, (Tautogolabrus adspersus), only warm-water cleaner fish for removal sea lice from Atlantic salmon Eastern Canada. Developing behavioural assay syndromes important industry to use improve aquaculture because they linked species’ growth, cleaning efficiency, welfare. I explored if reactive exist cunners how size influences research was conducted with different sizes (n=43) Hagen Aqualab three months, starting January 2020. open field test, scoring a swimming were conducted, followed by mirror test measuring sociality aggression. Then, replica score novel object also boldness. shelter-seeking anxiety. found that all size-classes showed proactivity reactivity. However, there significant difference components personality determined two between large small-medium cunners. These findings may develop when breed desired traits, such better growth higher efficiency.