Bigmouth Stream Goby
NameBigmouth Stream Goby
Scientific NameRhinogobius brunneus
Common NamesBigmouth Stream Goby, Brown Goby, Japanese Stream Goby
FamilyGobiidae
OriginEast Asia, Japan, Korea, China, Taiwan
Temperamentcommunity
Dietcarnivore
Care Levelintermediate
Minimum Tank Size (Gallons)20
Max Size (Inches)3.5
Water TypeFreshwater
Temperature Range (°F)68-78
pH Range6.5-7.5
Compatible SpeciesSmaller loaches, Danios, Rasboras, Other peaceful, similarly sized stream fish
Description
The Bigmouth Stream Goby is a small, bottom-dwelling freshwater fish native to East Asia, known for its mottled brown coloration and prominent mouth. It often displays an elongated first dorsal fin ray. These gobies are generally peaceful but can be territorial, thriving in well-oxygenated tanks with plenty of rocks and hiding spots.
