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Shy and Bold Fish Have the Same Preference for Light Color Selection.
Qingqing Zou1,2, Weiwei Li1,2, Chaoshuo Zhang1,2
1State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
Animals : an Open Access Journal From MDPI
|June 19, 2024
Summary
Fish personality influences their light color preferences in aquaculture. Yellow catfish juveniles preferred yellow and green light, with bold individuals making faster decisions.
Area of Science:
- Aquaculture
- Animal Behavior
- Fish Ecology
Background:
- Personality traits in fish are linked to animal welfare.
- Light is a critical environmental factor in aquaculture systems.
- Understanding fish personality's role in light selection is essential for optimizing welfare.
Purpose of the Study:
- To investigate how personality traits of yellow catfish (Pelteobagrus fulvidraco) juveniles influence their light color preferences.
- To quantify selective behaviors of different personalities under various light conditions.
Main Methods:
- Assessed personality traits of yellow catfish juveniles.
- Quantified behavioral responses (dwell time, visit frequency, movement) under six light colors (violet, yellow, green, red, blue, white).
Main Results:
- Yellow catfish juveniles showed a preference for yellow and green light.
- Higher cumulative dwell time was observed in yellow, green, and red light.
- Green light elicited the highest visit frequency and longest total moved distance.
- Both shy and bold individuals preferred green light, but bold individuals made quicker decisions.
Conclusions:
- Yellow and green light are preferred by juvenile yellow catfish, potentially improving their welfare in aquaculture.
- Personality influences decision-making speed in light selection.
- Findings provide a theoretical basis for optimizing lighting conditions in yellow catfish farming.
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