When fish die in a river, the first hours shape the diagnosis: alert agencies, measure water, collect comparative samples and preserve traceability records.
Insect meals can replace part of conventional aquafeed protein, but species, processing, amino acids, lipids and farm-scale evidence still govern success.
Zebrafish sperm cryopreservation can reduce live colonies only when fertility, identity, health status and practical recovery are validated for every line.
A 2026 review argues that wild-type zebrafish lines are neither isogenic nor interchangeable, making colony history essential experimental metadata today.
A study across 23 zoos and aquariums argues for treating team wellbeing as a work system built on equity, participation, support and visible follow-up.
A 2026 review finds no universal fish-stunning method: species, size, settings and evidence of unconsciousness must be validated under commercial conditions.
A model of 30 English rivers shows why flow, shade, effluent and channel form must be monitored alongside oxygen, algae and E. coli through 2050 and beyond.
Five facilities harbour distinct microbial communities in tank water and zebrafish. Reporting them is becoming a reproducibility issue for research labs.
A 2026 analysis examines treatments chosen without diagnosis or clear ingredients. Its practical answer is to document the system before medicating it.
