Saltwater Fish
Decorated Goby

Species Description…

Scientific Name: Istigobius decoratus
Common Name: Decorated Goby
Species Group: Goby
Habitat: Reef Safe
Care Level: Beginner
Temperament: Peaceful
Diet Type: Carnivore
Role in Aquarium: Cleanup Crew
Max Fish Length: 5 (inches)
Min Aquarium Size: 30 (gallons)
Native Range: Indo-Pacific, including the Red Sea, Australia, and Japan
Istigobius decoratus - Decorated Goby

Istigobius decoratus (Decorated Goby)

Overview

  • Found in the Indo-Pacific region, typically inhabiting sandy bottoms and shallow lagoons.
  • Recognized by its intricate patterns of spots and lines, giving it a finely decorated appearance.
  • Often seen resting on the substrate, blending seamlessly with its surroundings.
  • Well-suited for peaceful reef aquariums with fine sand and rock structures.

Feeding

  • Primarily feeds on small crustaceans, worms, and microscopic organisms in the sand.
  • Readily accepts frozen foods such as brine shrimp, mysis shrimp, and finely chopped seafood.
  • Supplementing with sinking pellets and live foods ensures proper nutrition.
  • Prefers to sift through the sand to find food, making a naturalistic substrate beneficial.

Habitat

  • Prefers sandy or silty environments where it can burrow for shelter.
  • Requires an aquarium setup with soft substrate and scattered rocks for hiding.
  • Thrives in moderate water flow, which helps distribute food particles naturally.
  • Best housed in a stable environment with minimal aggressive tank mates.

Fish Care

  • Optimal water temperature: 75-82°F (24-28°C).
  • pH level: 8.1-8.4, with a specific gravity of 1.023-1.026.
  • Maintaining high water quality is essential for long-term health.
  • Regular substrate cleaning helps prevent detritus buildup in the tank.

Compatibility

  • Peaceful and non-aggressive, making it ideal for community reef tanks.
  • Best kept with similarly sized, passive fish to avoid stress.
  • Should not be housed with aggressive or territorial species.
  • Pairs well with other sand-dwelling gobies and burrowers.

Aquarium Behavior

  • Spends most of its time on or near the substrate, scanning for food.
  • Can be shy initially but becomes more confident in a well-structured environment.
  • Frequently burrows or hides in the sand when feeling threatened.
  • Active in the daytime, often seen sifting sand through its gills while feeding.