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  1. Animals
  2. ›Arthropods
  3. ›Crustaceans
  4. ›Typical Crustaceans
  5. ›Barnacles and Copepods
  6. ›Copepods
  7. ›Neocopepoda
  8. ›Podoplea
  9. ›Cyclopoid Copepods
  10. ›Ergasilida
  11. ›Ergasilids
Ergasilus
Plate 1 of 1. (c) Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology, some rights reserved (CC BY-NC-SA) · via iNaturalist

Ergasilus

Ergasilus is a genus of copepod crustaceans occurring in both the ocean and fresh water, often called gill lice. The females are parasitic upon the gills of fishes. This is similar to members of the crustacean order Arguloida (fish lice). Being copepods, gill lice have a single median eye on their head. The second antennae are modified into prehensile pincers. Male gill lice are free-living.

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15 branches of this genus, most-observed first

Ergasilus arthrosis

speciesErgasilus arthrosis

Ergasilus cyprinaceus

speciesErgasilus cyprinaceus

Ergasilus gibbus

speciesErgasilus gibbus

Ergasilus lizae

speciesErgasilus lizae

Ergasilus rostralis

speciesErgasilus rostralis

Ergasilus synanceiensis

speciesErgasilus synanceiensis

Ergasilus iraquensis

speciesErgasilus iraquensis

Ergasilus briani

speciesErgasilus briani

Ergasilus ogawai

speciesErgasilus ogawai

Ergasilus pararostralis

speciesErgasilus pararostralis

Ergasilus barbi

speciesErgasilus barbi

Ergasilus cerastes

speciesErgasilus cerastes

Ergasilus clupeidarum

speciesErgasilus clupeidarum

Ergasilus mosulensis

speciesErgasilus mosulensis

Ergasilus sieboldi

speciesErgasilus sieboldi

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Where it lives

Recorded sightings

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geo-referenced records in GBIF, from museums, herbaria and field observers.

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Every page naming Ergasilus in the Biodiversity Heritage Library →

This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 339089.