Primary Assay — Medaka
Light/Dark Preference
Oryzias latipes
Scototaxis assay measuring innate preference for dark environments. Medaka exhibit robust light/dark preference that is sensitive to anxiolytic and anxiogenic compounds, making it a key anxiety-related behavioral endpoint.

Quantitative Output
Measured Parameters
Every parameter is automatically tracked frame-by-frame in the ConductVision pipeline for Oryzias latipes.
| Parameter | Unit | Description |
|---|---|---|
| Time in dark zone | s | Scototaxis preference |
| Zone transitions | count | Exploration/anxiety balance |
| Latency to enter dark | s | Initial avoidance response |
References
Citations for Light/Dark Preference
- Hong X, et al. (2019). Fish behavior: A promising model for aquatic toxicology research. Sci Total Environ, 686, 311-321. PMID: 31181518
Compatible Equipment
Hardware for Medaka Research
Multi-Well Observation Chamber
Larval locomotion screening
Social Interaction Tank
Two-choice social preference
Mirror Aggression Setup
Controlled agonistic testing
Infrared Camera System
Dark-phase recording
Breeding / Courtship Arena
Reproductive behavior quantification
Related Assays
Other Medaka Primary Assays

01
Social Preference
Oryzias latipes
Two-choice social preference assay quantifying time spent near conspecifics versus empty compartments. Medaka display me…

01
Aggression / Mirror Test
Oryzias latipes
Mirror-elicited aggressive display quantifying lateral displays, frontal approaches, and bite attempts. Medaka exhibit r…

01
Open Field
Oryzias latipes
Standard locomotor and anxiety assay measuring total distance, center occupancy, and thigmotaxis. Medaka open field beha…
Run Light/Dark Preference on ConductVision
Our team will configure the protocol, camera rig, and analysis pipeline for your medaka facility.
