Got a photo? Identify fish instantly with the Fishby app.
Open the appDescription
The Armored searobin (Peristedion miniatum) is a fascinating benthic fish belonging to the family Peristediidae. It is characterized by its distinctive armored body, formed by large, bony scutes, and its modified pectoral fin rays that act as 'legs' for walking on the seafloor. These fish are primarily found in deep-water environments, where they forage for small invertebrates.
Physical Characteristics
- Body shape
- elongated
- Coloration
- Generally reddish to orange-red dorsally, fading to lighter shades ventrally. The fins may have darker margins or spots. The bony scutes are often a prominent reddish-brown.
- Scale type
- none
- Mouth position
- inferior
- Distinctive features
- Body completely encased in four rows of large, bony, keeled scutes (plates) on each side, forming a rigid armor., Snout flattened and extended into two prominent, divergent rostral processes (horns)., Two free, finger-like rays on each pectoral fin, used for 'walking' on the seafloor and sensing prey., A pair of barbels on the lower jaw.
- Dorsal fin
- Two dorsal fins: the first with 7-8 spines, the second with 20-23 soft rays. The first dorsal fin is typically short and high.
- Tail fin
- Caudal fin truncate to slightly emarginate.
- Pectoral fin
- Pectoral fins with 11-12 rays, the lower two rays are free and detached from the main fin, thickened, and used as sensory appendages.
- Distinctive fins
- Pelvic fins thoracic, with one spine and five soft rays.
Identification Tips
Body Armor
The most striking feature is the complete encasement of the body in four rows of large, bony scutes on each side, giving it a distinctly armored appearance. This differentiates it from other bottom-dwelling fish.
Rostral Processes
Look for the flattened snout that extends into two prominent, divergent 'horns' or rostral processes. This is a key characteristic of the genus Peristedion.
Free Pectoral Rays
Observe the two lowermost rays of the pectoral fins; they are detached, thickened, and used independently for locomotion and sensing. This 'walking' behavior is unique.
Coloration
Its reddish to orange-red coloration, especially on the dorsal side, is typical for deep-water species and helps it blend with the deep-sea environment.
Habitat
- Water type
- saltwater
- Depth
- Typically found at depths ranging from 100 to 600 meters (330 to 2,000 feet), though occasionally shallower or deeper.
- Environment
- Benthic, inhabiting soft bottoms (mud, sand, gravel) on continental shelves and slopes. They are often found in areas with moderate currents.
- Geographic range
- Western Atlantic Ocean, from Nova Scotia, Canada, south to Florida, USA, and throughout the Gulf of Mexico and Caribbean Sea, extending to northern South America.
Aquarium Information
- Care level: expert
- Temperament: peaceful
- Diet: carnivore
- Minimum tank size: 200 gallons
- Temperature: 50-60°F (10-15°C)
- pH level: 8.1-8.4
- Hardness: 8-12 dKH
- Compatibility: Due to its specialized deep-water requirements and feeding habits, it is generally not suitable for home aquaria. If attempted, it would require a very large, cold-water, deep-sea themed aquarium with compatible, non-aggressive deep-water species.
- Special requirements: Requires a very large, specialized cold-water aquarium with significant depth simulation and specific substrate for foraging. Maintaining appropriate deep-water conditions (temperature, pressure, lighting) is extremely challenging.
Wild Information
- Conservation status: least concern
- Seasonality: Not subject to seasonal migrations or specific seasonal behaviors that impact human interaction. Present year-round in its deep-water habitat.
- Market price: N/A
- Commercial importance: none
- Taste: Unknown, not typically consumed.
- Texture: Unknown, not typically consumed.
- Nutritional value: Unknown, not typically consumed.
Key Facts
Walking Fishbehavior
The Armored searobin uses its modified, free pectoral fin rays to 'walk' along the seafloor, allowing it to explore the substrate for food.
Armored Bodyinteresting
Its entire body is covered in four rows of large, bony scutes, providing excellent protection against predators in its deep-sea habitat.
Sensory Appendagesbehavior
The free pectoral fin rays are not just for locomotion; they are also highly sensitive and used to detect prey buried in the sediment.
Deep-Sea Dwellerinteresting
This species is adapted to life in deep, cold waters, typically found hundreds of meters below the surface.
Safety Information
Handle with care- Safety level: caution
- Venomous: No
- Edibility: not recommended
- Handling notes: While not venomous, the bony scutes and spines can be sharp. Handle with care to avoid cuts or punctures. Its deep-water origin means it is susceptible to barotrauma if brought to the surface rapidly.
Similar Species
Spinycheek Searobin
Peristedion gracile
P. gracile generally has a more slender body, less prominent rostral processes, and differences in the number of scutes and fin ray counts. P. miniatum typically has more robust rostral processes and a more pronounced reddish hue.
Longnose Searobin
Peristedion longispatha
P. longispatha has significantly longer and more pointed rostral processes compared to the broader, more divergent processes of P. miniatum. Coloration can also differ subtly.
Armored Gurnard (general)
Various Peristediidae species
Distinguishing between different species within the Peristediidae family often requires careful examination of scute counts, fin ray counts, the morphology of the rostral processes, and the presence/absence of specific spines or barbels. P. miniatum is characterized by its specific combination of these features.
Scientific Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Scorpaeniformes
- Family
- Peristediidae
- Genus
- Peristedion
- Species
- Peristedion miniatum
Explore Armored searobin
Identify fish anywhere
Free on iOS, Android, and Web. Photo identification, full species details, and more.