Plan zebrafish experimental units, randomisation and blinding before video recording to limit avoidable bias and preserve a clear trail through data analysis.
A fluvial-lake experiment compared fish catches with and without motor noise. Responses varied by species; the study does not establish population decline.
Xenopus tropicalis is a diploid model for studying gene function. CRISPR experiments need functional validation alongside documented husbandry conditions.
The nematode Anguillicola crassus damages European eel swim bladders. Monitoring should separate parasite presence, burden and cumulative lesions over time.
Targets, stations and positive reinforcement can reduce some captures. A useful programme defines behaviour, measures outcomes and respects refusal each time.
In Daphnia magna, clone identity, diet and medium shape test validity. OECD criteria are a minimum requirement, rather than proof of comparability alone.
Infectious salmon anaemia requires combined diagnostics and immediate biosecurity. A molecular result alone cannot describe disease or clinical severity.
