silverfish

silver +‎ fish: from its appearance, in the case of the insect.

silverfish (plural silverfish or silverfishes)

1. Certain insects
   1. A small wingless insect of species Lepisma saccharinum, with silvery scales; a type of bristletail.
   2. Other similar insects in the order Zygentoma, including:
      1. Ctenolepisma lineata (four-lined silverfish).
      2. Ctenolepisma longicaudata (grey silverfish).
2. Certain fish
   1. Megalops atlanticus (Atlantic tarpon, tarpum.
   2. Raiamas senegalensis (silver fish).
   3. Antarctic silverfish, Pleuragramma antarcticum.
   4. A white variety of the goldfish.
   5. Aphareus rutilans (rusty jobfish)
   6. Argentina sphyraena (herring smelt)
   7. Argyrozona argyrozona (carpenter sea bream)
   8. Labeobarbus bynni (Niger barb, barbel, Nile barb)
   9. Enteromius mattozi (papermouth)
   10. Callorhinchus milii (elephant shark)
   11. Elops saurus (ladyfish)
   12. Leptatherina presbyteroides (hardyhead, prettyfish)
   13. Pseudocaranx dentex (white trevally)
   14. Steindachnerina argentea (toothless characin)
   15. Trachinotus ovatus (pompano)
   16. Trichiurus lepturus (largehead hairtail)
   17. Ulaema lefroyi (mottled mojarra)

• (type of bristletail): fishmoth