Opalfish
NameOpalfish
Scientific NameAmmodytes tobianus
Common NamesSand Eel, Sand Lance, Lesser Sand Eel, Opalfish
FamilyAmmodytidae
OriginNorth Atlantic Ocean, North Pacific Ocean, Arctic Ocean, Coastal temperate waters
Temperamentpeaceful
Dietcarnivore
Care Levelexpert
Minimum Tank Size (Gallons)100
Max Size (Inches)8
Water TypeSaltwater
Temperature Range (°F)40-65
pH Range7.8-8.4
Compatible SpeciesSmall, peaceful gobies, Small, peaceful blennies, Other non-predatory, cool-water marine invertebrates
Description
Opalfish, commonly known as Sand Lances or Sand Eels, are slender marine fish characterized by their elongated bodies and pointed snouts. They are masters of camouflage, rapidly burrowing into sandy substrates to hide from predators and ambush prey. These cool-water carnivores are challenging to keep in home aquariums due to their specific needs for deep sand, live zooplankton, and stable cold marine conditions.
