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Gobiodon rigaudii, commonly known as the Tiger Goby, is a small, colorful marine fish belonging to the family Gobiidae. It is characterized by its distinctive vertical banding pattern and its association with branching corals, particularly Acropora species. These gobies are known for their territorial behavior within their coral host and their unique reproductive strategies.
Physical Characteristics
- Body shape
- compressed
- Coloration
- The body is typically yellow to orange with several distinct, dark vertical bands (usually 4-6) that extend from the dorsal to the ventral side. The intensity and number of bands can vary slightly. Some individuals may have blue or purple markings on the head or fins.
- Scale type
- cycloid
- Mouth position
- superior
- Distinctive features
- Small, compressed body, Prominent vertical dark bands on a yellow/orange background, Large eyes positioned dorsally, Fused pelvic fins forming a suction cup-like disc
- Dorsal fin
- Two dorsal fins; the first dorsal fin has 6 spines, and the second dorsal fin has 1 spine and 8-10 soft rays. The first dorsal fin is typically lower than the second.
- Tail fin
- Rounded caudal fin.
- Pectoral fin
- Pectoral fins are relatively large and rounded, with 17-19 rays.
- Distinctive fins
- Pelvic fins are fused into a disc-like structure, characteristic of gobies, used for clinging to coral branches.
Identification Tips
Coloration and Pattern
Look for the distinctive yellow to orange body with 4-6 prominent dark vertical bands. This is the primary distinguishing feature.
Habitat Association
Always found living within the branches of live Acropora corals. If you see a small goby in branching coral, it's likely a Gobiodon species.
Body Shape
Its compressed body and relatively large head are characteristic of the genus Gobiodon.
Pelvic Fins
The fused pelvic fins forming a suction cup are a key goby characteristic, allowing them to cling to coral.
Habitat
- Water type
- saltwater
- Depth
- 1-20 meters (3-65 feet)
- Environment
- Coral reefs, specifically associated with branching corals of the genus Acropora. They live within the coral branches, using them for shelter and protection.
- Geographic range
- Indo-Pacific region, including the Red Sea, East Africa, Maldives, Indonesia, Philippines, Great Barrier Reef, and various Pacific islands.
Aquarium Information
- Care level: intermediate
- Temperament: peaceful
- Diet: carnivore
- Minimum tank size: 10 gallons
- Temperature: 72-78°F (22-26°C)
- pH level: 8.1-8.4
- Hardness: 8-12 dKH
- Compatibility: Generally peaceful with other small, non-aggressive fish. Can be territorial towards conspecifics or other gobies if not enough space or coral hosts are provided. Best kept singly or in a mated pair.
- Special requirements: Requires live branching coral (e.g., Acropora) for shelter and as a host. A well-established reef aquarium with stable water parameters is essential. Provide plenty of hiding spots and a varied diet of small, meaty foods.
Wild Information
- Conservation status: least concern
- Seasonality: Breeds year-round in tropical waters, with peak activity influenced by local environmental conditions.
- Market price: Varies, typically moderate for the aquarium trade.
- Commercial importance: low
- Taste: Not typically consumed due to small size.
- Texture: Not typically consumed due to small size.
- Nutritional value: Not typically consumed due to small size.
Key Facts
Coral Dwellerbehavior
Tiger Gobies are obligate coral dwellers, meaning they rely entirely on live branching corals, primarily Acropora species, for shelter, protection, and spawning sites.
Mucus Defenseamazing
Like other Gobiodon species, the Tiger Goby can secrete a toxic mucus from its skin when stressed or threatened, deterring predators.
Protogynous Hermaphroditesevolution
Gobiodon rigaudii are protogynous hermaphrodites, meaning they are born female and can change sex to male. This allows for flexible pairing within their coral hosts.
Territorial Hostsbehavior
While generally peaceful, they are highly territorial within their chosen coral colony, defending it against other gobies and sometimes even larger fish.
Safety Information
Safe- Safety level: safe
- Venomous: No
- Edibility: not recommended
- Handling notes: No specific handling precautions are required beyond standard fish handling practices to minimize stress. They are small and delicate.
Similar Species
Green Clown Goby
Gobiodon atrangulatus
Lacks the prominent vertical banding; typically solid green or greenish-brown with a dark spot on the operculum.
Yellow Clown Goby
Gobiodon okinawae
Solid yellow coloration, lacking any vertical bands. May have faint orange markings on the head.
Black-lined Coral Goby
Gobiodon ceramensis
Similar body shape but typically has fewer, thicker black bands and often a more reddish-orange base color.
Scientific Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Gobiiformes
- Family
- Gobiidae
- Genus
- Gobiodon
- Species
- Gobiodon rigaudii
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