A fish as a symbol of balance between an organism and its environment

Health Does Not Mean Sterility

Health is not the absence of all microorganisms and parasites, but the ability of an organism to preserve its functions and resilience while continuously interacting with the environment.

August 2, 2026 · 9 min
Mechanical reduction of the parasite burden in cryptocaryonosis

Cryptocaryonosis: killing the parasite or treating the water?

In severe cryptocaryonosis, the first task is to keep the fish alive and reduce the number of parasites on its body; only then should the remaining life cycle of Cryptocaryon in the system be targeted.

August 1, 2026 · 15 min
Goussia coccidia in fish

Fish coccidia: Goussia

Oocysts with elongated sporozoites are characteristic of Goussia. Microscopy-based interpretation and diagnostic features.

April 15, 2026 · 3 min
Fish necropsy: myths and reality

Is It Ever Too Late for a Fish Autopsy?

Toggle Myth / Reality Myth “Only Fresh Fish Can Be Examined” There’s a common belief that if a fish dies in an aquarium, an autopsy is pointless. It’s often claimed that you must dissect immediately after death, otherwise nothing useful can be learned. The reasoning goes like this: fish decompose very quickly at room temperature — within minutes, tissues change, organs lose structure, and parasites either die or abandon the host. ...

July 21, 2025 · 5 min