The scientific name for Japanese beetle is Popillia japonica.
The scientific name for Japanese eggplant is Solanum melongena.
If it has Japanese maple leaves, then it's obviously a Japanese Maple!
The scientific name for Japanese Scad, which are galunggong, is Decapterus maruadsi.
Macaca fuscata.
Popillia japonica
The are multiple trees that are known as the Japanese Plum, and they are the Ume, or Prunus mume, the Sumomo, or Prunus salicina, and the Loquat, or Eriobotrya japonica.
The scientific or taxonomic name would be Coturnix coturnix.
The scientific or taxonomic name would be Paralichthys olivaceus.
The scientific or taxonomic name would be Oryzias latipes.
The scientific or taxonomic name would be Oplegnathus fasciatus.
The scientific or taxonomic name would be Bromus japonicus.