Aquarium fish parasitic disease — protozoa and external parasites
Source: Merck Veterinary Manual (merckvetmanual.com), a copyrighted professional veterinary reference. Per COPYRIGHT_POLICY §3, the points below are paraphrased derived fact summaries: numerical values and proper nouns are preserved from the source, but sentences are rewritten and not quoted verbatim.
Claims
*[Paraphrased derived summary — non-Open-Access source.]* Unbuffered MS-222 must never be used: it is very acidic and can damage fish epithelium and make some parasites detach. *[Paraphrased derived summary — non-Open-Access source.]* Tissue should be checked for both morphology and the presence of parasites, bacteria, or fungi. *[Paraphrased derived summary — non-Open-Access source.]* Wet-mount examination of fish tissue is essential for diagnosing most parasites.