Hypomesus japonicus
NameHypomesus japonicus
Scientific NameHypomesus japonicus
Common NamesJapanese Smelt, Wakasagi
FamilyOsmeridae
OriginJapan, Korea, Russia (Sakhalin Island)
Temperamentpeaceful
Dietcarnivore
Care Levelexpert
Minimum Tank Size (Gallons)75
Max Size (Inches)6
Water TypeBrackish
Temperature Range (°F)40-65
pH Range7.5-8.5
Compatible SpeciesSpecies-specific tank, Other cool-water brackish fish (with extreme caution)
Description
The Hypomesus japonicus, commonly known as the Japanese Smelt or Wakasagi, is a slender, silvery anadromous fish native to East Asian coastal waters. This schooling species primarily inhabits brackish and marine environments, migrating to freshwater to spawn. Due to its specific environmental requirements for cool, clean water and its anadromous lifecycle, it is considered an expert-level species for aquarium keeping.
