A retrospective study describes 63 tumours in 62 fish from 37 species and shows why a visible mass requires longitudinal records, purposeful imaging and histological confirmation.
An 84-day rainbow trout trial found no detectable health penalty when Tetraselmis chui biomass replaced part of the fish-oil fraction, but commercial validation still requires longer, farm-specific testing.
An analysis of 1,105 sites finds that species diversity and habitat mosaics can dampen fluctuations in river fish communities exposed to human pressure.
A new Atlantic salmon study measures Spironucleus salmonicida sensitivity to UV, while a RAS biosecurity trial that remained negative even in untreated controls exposes the limits of prevention claims.
Ultrasound monitoring of 120 zebra shark eggs clarifies when embryos and abnormalities may be detected, while showing why the images must remain cautious decision-support tools.
A study tested electrical euthanasia of adult zebrafish groups in their housing tanks, finding that performance depended on tank volume and stocking level.
This fastidious mycobacterium can cause systemic disease in laboratory zebrafish and persist in biofilms, calling for integrated fish and environmental surveillance.
In Port Jackson sharks, suturing internal-tag incisions reduced protrusion risk but increased inflammation and bacterial colonisation, revealing a protocol trade-off rather than a universal rule.
A study across eight Italian farms documents AcIV-E circulation and the diagnostic challenge posed by non-specific signs and the lack of routine cell culture.
