Longnose Lancetfish (Alepisaurus borealis) | Digital Marine Atlas

The Formidable Sail-Finned Predator of the Open Ocean

​The Longnose Lancetfish (Alepisaurus borealis) is a striking and powerful marine predator, instantly recognized by its sleek, silvery, torpedo-like body, sharp teeth, and a magnificent, sweeping, sail-like dorsal fin. As a fast-moving, aggressive pelagic hunter, it represents one of the ocean's most specialized apex predators. Due to its massive adult size, highly aggressive nature, and specific cooler-water requirements, this species is strictly suited for monumental, specialized setups or large-scale public aquariums.

​Key Features of this Edition:

​Global Presence: Native to the vast open waters of the Tropical Eastern and Western Pacific, as well as Oceania.

​Specialized Behavior: A highly active, formidable mid-water swimmer that patrols the open ocean, utilizing sudden bursts of incredible speed to ambush its prey.

​Natural Habitat & Diet: Accustomed to cooler, deeper pelagic zones, it is a voracious carnivore. In a captive environment, it demands a massive swimming space and a heavy diet of marine invertebrates and live fishes to satisfy its intense metabolic needs.

​Lighting Preference: Prefers brightly lit environments but strictly without direct sunlight, replicating the specific light diffusion found in deeper oceanic waters.

​[Exclusive Video Observation Included]

This edition includes an HD short observation clip showcasing the Longnose Lancetfish’s magnificent sail fin, its razor-sharp profile, and its powerful, predatory swimming dynamics in open water.

​Best for: highly advanced marine aquarists, public aquarium curators, predator tank specialists, marine biologists, and collectors of large pelagic marine species.

​Note: Full care data, extreme tank-size requirements, specialized predator feeding behavior, and cool-water environmental parameters are included in the Digital Infographic Card inside your download folder.

​Formats included: High-Resolution Infographic Card (PNG/PDF) + Video Clip (MP4).

​Part of the CECOZ Digital Marine Atlas Collection – Exploring the world, one species at a time.