The Poison Goby, Lemon Coralgoby, Fourbar Goby, Four-bar Maori Goby, Lemon Coral Goby, scientifically known as Gobiodon citrinus, is a captivating small fish species that graces the coral reefs of the Indo-Pacific region. This brightly colored fish, commonly found in shallow waters, is a captivating sight for divers and marine enthusiasts alike.
Description & Characteristics
The Gobiodon citrinus is characterized by its vibrant lemon yellow body, adorned with four distinct, vertical, dark brown or black bars. These bars extend from the dorsal fin to the belly, providing a striking contrast against the yellow background. The fish’s small, slender body can reach a maximum size of 6.6 cm, making it a miniature wonder of the underwater world. Its eyes are large and prominent, adding to its alert and inquisitive appearance.
Habitat and Occurrence
The Gobiodon citrinus is a resident of the Indo-Pacific region, dwelling in shallow, coastal waters, specifically in coral reefs. It prefers environments within the subtidal, sublittoral, and infralittoral zones, making its presence known from the lower limit of the intertidal zone to the shelf edge at about 200 m water depth. This affinity for neritic waters further emphasizes its preference for coastal areas, particularly those abundant in coral formations.
Taxonomy
The species Gobiodon citrinus falls under the Class: Teleostei, which encompasses bony fish. It belongs to the Order: Gobiiformes, the goby fishes, known for their diverse forms and adaptations. Gobiodon citrinus is a member of the Family: Gobiidae, the goby family, renowned for its numerous species, including some that are remarkably small and adapted for specific niches.
Feeding
The Gobiodon citrinus is a voracious feeder, relying on a diet consisting of various microscopic organisms and small invertebrates. Its feeding habits include consuming bosmiden, brine shrimp nauplii, brine shrimps, and cyclops. Notably, Gobiodon citrinus is also a corallivorous species, meaning it actively feeds on coral polyps. This dietary preference contributes to its role in the delicate balance of the coral reef ecosystem.
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