Mnemiopsis leidyi may go unnoticed even where it occurs. A July 2020 survey of French Gulf of Lion lagoons illustrates the value of combining sightings with documented sampling, and why a non-detection is not proof of absence.
A 2025 experiment reduced fish-pathogenic bacteria using plasma combined with cavitation. The tests involved bacterial suspensions; fish safety, biofilter compatibility and performance in operating farms still need assessment.
A feeding aggregation does not describe how sharks use an exhibit throughout the day. Field research from Moorea supports observations outside feeding periods, while keeping reef findings separate from evidence about aquarium collections.
Unusual skin shedding in Xenopus laevis can accompany cutaneous capillariasis. Shed skin and histology can contribute to the diagnostic investigation; redness or a bacterial culture alone does not identify the underlying cause.
Disinfecting cysts does not make a hatchery sterile. Useful checks distinguish contamination control, preservation of hatching performance and removal of residual chlorine before incubation.
A Centre Scientifique de Monaco study tests antioxidant delivery to Stylophora pistillata through enriched Artemia. Physiological responses support further investigation, while differences between endpoints limit immediate use across aquarium collections.
Marbled crayfish can reproduce without fertilisation. A single observation therefore calls for reliable identification, site records and prevention of transfers, rather than an initial search for a breeding pair.
In Xenopus laevis, clasping alone establishes neither a partner’s sex nor breeding success. Recording contact and vocal exchanges helps describe behaviour without treating every interaction as a measure of fertility.
Identifying Flavobacterium psychrophilum leaves important variation unresolved. A US study of 320 isolates shows how molecular serogrouping can support surveillance without directly predicting virulence or vaccine protection.
A scientific trawl does not count every fish in an area. MEDITS methods explain how catches become comparable indices and why season, depth, gear and swept area must accompany any reported trend.
Juvenile nursehound sharks use artificial seaweed and tile shelters differently. A pilot study published on 16 October 2026 highlights the need to follow their choices over time and distinguish shelter use from evidence of improved welfare.
Resumed swimming does not necessarily establish pain relief. Zebrafish studies and FELASA guidance show why analgesic assessment needs several behavioural measures, appropriate controls and a clear timeline.
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