Encyclopedia · Arthropods

Argulus

Fish Louse

Symptoms reported

  • •Skin irritation on aquatic hosts
  • •Localized tissue damage from suctorial discs
  • •Secondary infections in host skin

Life cycle

Eggs are laid on substrate; young hatch as nauplius or juvenile stages that attach to the skin or gills of fish as ectoparasites.

Transmission

Direct contact in aquatic environments where free-swimming larvae or adults attach to fish or amphibians.

Conventional medical treatment

Consult a veterinarian for organophosphate baths (e.g., Trichlorfon) or diflubenzuron to treat infested aquatic populations.

For information only. Discuss with a licensed healthcare provider before starting any pharmaceutical.

Treatment Options — Natural First, Pharmaceutical When Needed

Natural First

  • •Garlic
  • •Neem
  • •Oregano oil
  • •Activated charcoal (binder)
  • •Hydration + electrolytes
  • •Rest + bone broth nutrition

Pharmaceutical (if natural-first insufficient)

  • •Consult a veterinarian for organophosphate baths (e.g., Trichlorfon) or diflubenzuron to treat infested aquatic populations.

When to escalate to pharmaceutical

Pharmaceutical/topical first if: visible infestation (lice, scabies), secondary bacterial infection of bites, or systemic allergic reaction. Natural-first is appropriate for prevention and mild symptomatic care.

Traditional herbal alternatives

In stock at our apothecary

In our database (educational reference)

Each herb above carries a tradition. See the 2,000-year lineage of Western herbal medicine →

“Both pairs of antennae reduced; claws on antennules; maxillules often forming pair of suctorial discs; maxillae uniramous; ectoparasites of marine and freshwater fishes.”

— Foundations of Parasitology (Roberts, Janovy)

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This page is for educational purposes only. It does not provide medical advice, diagnosis, or treatment. Consult a licensed healthcare provider before acting on anything you read here.