Round structures with a distinct halo.

Cryptococcus-like structures in fish

Not everything with a capsule is Cryptococcus. Morphology may resemble it, but conclusions require caution.

April 14, 2026 · 2 min
Round structures with a distinct halo.

Fungal structures in fish: colonization or invasive process

Hyphae in fish are not always saprolegniosis. It is important to distinguish colonization from invasive processes.

April 14, 2026 · 3 min
Size fish

Patient Size Doesn’t Matter — Why Fish Don’t Die From Diagnostics

Non-lethal fish diagnostics explained: why scrapes, smears and examinations are safe — and why severely compromised fish may die after handling.

February 5, 2026 · 8 min