Signigobius Biocellatus (The Twin-Spot Goby)

Overview

• Commonly known as the Twin Spot Goby or Signal Goby.
• Native to the Indo-Pacific region, often found in sandy lagoons and reef flats.
• Recognized for its distinct twin eye-spots on its dorsal fin, used for deterring predators.
• A fascinating and unique addition to reef aquariums, known for its burrowing and sand-sifting behavior.

Feeding

• Carnivorous diet, primarily consuming small crustaceans and zooplankton.
• Requires a well-established aquarium with a continuous supply of live copepods and amphipods.
• Can be trained to accept frozen foods such as mysis shrimp and brine shrimp.
• Frequent feedings are necessary to maintain proper nutrition and health.

Habitat

• Typically found in sandy-bottom environments with coral rubble.
• Prefers stable water conditions with gentle to moderate water movement.
• Requires a minimum 30-gallon tank, with a mature sand bed for natural sifting behavior.
• Best kept in a well-established aquarium with live rock structures for shelter.

Fish Care

• Optimal water temperature: 74-80°F (23-27°C).
• Ideal pH level: 8.1-8.4, with a specific gravity of 1.020-1.025.
• Requires stable water parameters and regular maintenance.
• Prone to starvation if not provided with an adequate and consistent food supply.
• Best kept in pairs to encourage natural behavior and reduce stress.

Compatibility

• Peaceful and best suited for reef aquariums with non-aggressive tank mates.
• Compatible with species such as clownfish, wrasses, and other small gobies.
• May become territorial toward other sand-sifting gobies in confined spaces.
• Avoid housing with large, aggressive fish that may intimidate or outcompete them for food.

Aquarium Behavior

• Spends most of its time near the substrate, continuously sifting sand for food.
• Known for its fascinating burrowing behavior, often creating small tunnels in the sand.
• Generally peaceful but may be shy when first introduced to the aquarium.
• Providing a mature sand bed and live rock ensures a more natural and enriching environment.