Olive Goby — a Gobiidae from Indo-Pacific, calm bottom resident with clear territory boundaries. Reaches 37.5–55 cm; singly or in pairs; every fish needs its own refuge. 18–26 °C.
Care parameters
Water temperature
18–26 °C
pH
6.5–7.5
GH hardness
5–15 dGH
Adult length
37.5–55 cm
Minimum tank
500 L
Water layer
Bottom-dwelling
Difficulty
Moderate
Temperament
Calm bottom resident with clear territory boundaries
Origin
Indo-Pacific
Species overview
Glossogobius olivaceus, a member of the family Gobiidae, is native to Indo-Pacific. Every rock overhang is real estate; give each fish a cave and the tank stays peaceful. It lives on the bottom. Adults reach 37.5–55 cm. Singly or in pairs; every fish needs its own refuge. Provide fine sand or smooth gravel, a cave per fish, and gentle to moderate flow. Maintain 18–26 °C at pH 6.5–7.5. A rewarding species for the aquarist who reads before buying.
Native biotope
Habitat
Shallow streams and estuaries over sand
Flow
Still to gentle current
Dissolved O₂
Moderate
Aquascape & hardware
Substrate
Fine sand
Hardscape
Flat stones and shells
Plants
Sparse hardy plants
Temperament, diet & tankmates
Schooling
Singly or in pairs; every fish needs its own refuge
Diet
Meaty foods; train onto frozen then pellets
Recommended tankmates
Shrimps in a species setup — A classic pairing for the dedicated
Avoid keeping with
Other gobies of the same species without extra caves — Territorial wars over refuges