The Black-throated Threefin, Black-throated Triplefin, Gulf Threefin, Southern Triplefin, Threefin, Yellowback Threefin, Blackthroat Threefin – Helcogramma decurrens is a small, colorful fish species that is commonly found in the marine waters of the Pacific Ocean. This fish is characterized by its distinctive coloration and unique body shape.
Description & Characteristics
Helcogramma decurrens can reach a maximum size of 4.5 cm. This fish exhibits a striking coloration with a black throat, yellow back, and a distinct dark spot located above the pectoral fin. The species is easily identified by its elongated body and the presence of three dorsal fins, a characteristic feature that gives it its name.
Habitat and Occurrence
The Black-throated Threefin, Black-throated Triplefin, Gulf Threefin, Southern Triplefin, Threefin, Yellowback Threefin, Blackthroat Threefin – Helcogramma decurrens is typically found in shallow coastal waters with a depth range of 0.0 to 10.0 meters. It prefers habitats with rocky reefs and coral formations, making it a common sight in these marine environments. This species can be observed in various marine zones, including the intertidal zone and the neritic zone, demonstrating its adaptability to different aquatic ecosystems.
Taxonomy
The species Helcogramma decurrens belongs to the Class: Teleostei, Order: Blenniiformes, and Family: Tripterygiidae. This family of fishes is known for their elongated bodies, three dorsal fins, and specialized adaptations for living in rocky, coastal environments. The classification within these taxonomic levels highlights the evolutionary relationships and shared characteristics among these fish species.
Feeding
The Black-throated Threefin, Black-throated Triplefin, Gulf Threefin, Southern Triplefin, Threefin, Yellowback Threefin, Blackthroat Threefin – Helcogramma decurrens is an opportunistic feeder, consuming a variety of small invertebrates. Its diet consists of zooplankton, including copepods, brine shrimp nauplii, and other small crustaceans, as well as other small benthic organisms. Its feeding behavior is primarily opportunistic, relying on finding readily available food sources within its preferred habitat.
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