Glass cleaning supports husbandry and viewing, but its effect on fish cannot be assumed. A simple before, during and after observation can show whether a particular routine warrants adjustment.
The 2026 Clean Rivers programme around Marseille plans nearly 70 litter collections. Bags removed document the effort; assessing possible benefits for aquatic life also requires follow-up of remaining litter and habitat.
A RESAMA conference abstract reports urine collection from seabass and rainbow trout followed by physicochemical analysis. Comparative validation is still needed before the method can be used as an established stress indicator.
Researchers characterised two viral sequences from seabass fingerlings sampled in 2016. Detection improves the diagnostic toolkit, but it does not by itself establish the cause of the hatchery's health problems.
An experiment in gilthead seabream links Pelagia noctiluca exposure to gill damage and delayed losses. Farm surveillance needs to connect exposure, fish observations and diagnostic findings.
A shared exhibit must provide suitable conditions, food access and ways to avoid harmful encounters. A compatibility decision needs evidence, observation criteria and a workable separation plan.
A screen can reduce entrainment while fish still contact its surface. An Australian field study shows why approach velocity, fish size and complementary observation methods belong in the same assessment.
A distended abdomen does not confirm egg retention. Zebrafish egg-associated inflammation requires a usable reproductive history and tissue diagnosis; the evidence does not establish a universal spawning schedule.
A missing detection does not prove that a fish has left the site. Acoustic tracking needs evidence of receiver coverage, network availability and tagging limitations before movement records can support a management decision.
Meat, caviar and broodstock replacement call for different production plans. Selecting a sturgeon means matching stock identity and biological timing to the site and its intended market.
Small size and substantial adult transparency make Danionella cerebrum useful for longitudinal imaging. Adopting the model requires documented species identity, suitable husbandry and a study plan that treats imaging as an intervention.
A study in eight nursehounds measured meloxicam exposure after different administration routes. Its findings can inform a veterinary protocol review, but do not establish pain relief or long-term safety.
