Atlantic Barracudina
Lestidium Atlanticum
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Quick Facts
Distribution
- The Atlantic Barracudina is a slender, elongated fish built for life in the open ocean. Like other barracudinas, it has a long, streamlined body that makes it look a little like a miniature barracuda.
- It belongs to the family Paralepididae, a group sometimes called the barracudinas or pike smelt. These are deep-sea fish found across tropical and subtropical oceans around the world.
- In the Pacific and Indo-West Pacific, the Atlantic Barracudina has close relatives that were only formally described in recent years. Scientists split what was once considered a single wide-ranging species into several distinct ones as recently as 2020.
- The Atlantic Barracudina has been recorded in waters off Brazil, the Caribbean, Papua New Guinea and New Caledonia. This points to a scattered but wide distribution across warm ocean regions.
- Atlantic Barracudinas are mesopelagic fish, meaning they live in the open water column at mid-depths. They swim well below the sunlit surface but above the deepest ocean floor.
- Like their relatives, Atlantic Barracudinas are thought to be active predators in the water column. Fish in this family typically feed on smaller fish and tiny drifting animals.
- One of the more unusual features of this fish family is the presence of luminescent tissue. Related barracudinas have been found to produce light from specialised organs, which is rare among fish groups.
- The body of the Atlantic Barracudina is dark brownish on top and has a long lateral line running along its side. These features are shared across the group and help researchers tell one species from another.
- Taxonomy in this group has changed considerably in recent decades. Several names once applied to this species have since been reassigned or reclassified, making historical records difficult to interpret.
Species Interaction
Atlantic Barracudina: A Deep-Water Fish Rarely Seen
- Research & Rare Encounters
- Ecosystem Role
The Atlantic Barracudina is a mesopelagic species that lives well beyond the reach of recreational anglers and most commercial fisheries. It occasionally appears in scientific trawl samples, where researchers use it to better understand deep-ocean food webs and the ecology of the Paralepididae family. Taxonomy within this family is notoriously difficult, and specimens like this one are valued more by ichthyologists than by fishers or divers.
Scientific Classification
- Kingdom: Animalia
- Phylum: Chordata
- Class: Teleostei
- Order: Aulopiformes
- Family: Paralepididae
- Genus: Lestidium
- Species: Lestidium atlanticum
Conservation Status
The Atlantic Barracudina has not been assessed by the IUCN Red List, and it holds no listing under Australia’s EPBC Act. It is a mesopelagic, open-ocean species rarely encountered and not targeted by commercial fisheries, so no stock status or population trend data exists for Australian waters.
Interaction Highlights
Research
Specimens are studied to resolve the famously complex taxonomy of barracudina fishes.
Ecosystem
A mesopelagic predator linking zooplankton and larger deep-water fish in open-ocean food webs.
Elusive / Overlooked Species
Finding: Difficult
Temperament: Shy
Location: Deepsea, Offshore
Danger: None
