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Saurida undosquamis, commonly known as the Spotted Lizardfish, is a demersal marine fish belonging to the family Synodontidae. It is characterized by its elongated, cylindrical body, large mouth, and numerous small, sharp teeth. This species is a voracious ambush predator, typically found on sandy or muddy substrates where it buries itself, leaving only its eyes exposed, to wait for unsuspecting prey. It is a commercially important species in many parts of its range.
Caratteristiche fisiche
- Forma del corpo
- torpedo
- Colorazione
- Dorsal surface typically brownish or grayish, fading to lighter shades on the flanks and ventral side. Characterized by a series of indistinct, dark blotches or spots along the lateral line and dorsal surface, which can be more pronounced in some individuals. Fins are generally translucent with some dusky markings.
- Tipo di squame
- cycloid
- Posizione della bocca
- superior
- Caratteristiche distintive
- Elongated, cylindrical body, Large, broad head with a wide mouth extending beyond the posterior margin of the eye, Numerous small, sharp, brush-like teeth on both jaws and the tongue, Adipose fin present, Large eyes positioned dorsally on the head, Pectoral fins relatively long, reaching beyond the origin of the dorsal fin
- Pinna dorsale
- Single dorsal fin with 10-12 soft rays, followed by a small adipose fin.
- Pinna caudale
- Forked caudal fin.
- Pinna pettorale
- Long and narrow, typically reaching beyond the origin of the dorsal fin.
- Pinne distintive
- Pelvic fins are large and located abdominally, with 8 rays, the inner rays being longer than the outer ones.
Consigli per l'identificazione
Body Shape and Coloration
Look for the elongated, cylindrical body with brownish-gray coloration and indistinct dark blotches along the sides. The overall appearance is streamlined, resembling a lizard.
Mouth and Teeth
Observe the very large mouth that extends well past the eye. The presence of numerous small, sharp, brush-like teeth on both jaws and the tongue is a key identifier.
Adipose Fin
The presence of a small, fleshy adipose fin between the dorsal and caudal fins is characteristic of the family Synodontidae.
Pectoral Fin Length
Note if the pectoral fins are relatively long, extending beyond the origin of the dorsal fin.
Scale Count
Lateral line scales typically number 50-56. This can be a useful distinguishing feature from other Saurida species.
Habitat
- Tipo di acqua
- saltwater
- Profondità
- Typically found at depths ranging from 10 to 350 meters, most commonly between 20 and 100 meters.
- Ambiente
- Demersal, inhabiting sandy or muddy bottoms of continental shelves and slopes. Often found near estuaries and coastal areas.
- Areale geografico
- Indo-Pacific region, from the Red Sea and East Africa eastward to Japan, Australia, and the Hawaiian Islands. Also reported in the Mediterranean Sea as a Lessepsian migrant.
Informazioni sull'acquario
- Livello di cura: expert
- Temperamento: aggressive
- Dieta: carnivore
- Dimensione minima della vasca: 500 gallons
- Temperatura: 22-26°C (72-79°F)
- Livello di pH: 8.1-8.4
- Durezza: 8-12 dKH
- Compatibilità: Not suitable for community tanks. Best kept alone or with very large, robust, and fast-moving fish that cannot be swallowed. Will consume any fish or invertebrate small enough to fit in its mouth.
- Requisiti speciali: Requires a deep sand bed (at least 10-15 cm) for burrowing. Excellent filtration and strong water movement are essential. Live food or very fresh, high-quality frozen seafood is necessary to entice feeding. Prone to stress in small or bare tanks.
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: Spawning typically occurs during warmer months, varying geographically. Available year-round in commercial fisheries.
- Prezzo di mercato: Varies significantly by region and market demand, generally moderate.
- Importanza commerciale: high
- Sapore: Mild, slightly sweet
- Consistenza: Firm, flaky white flesh
- Metodi di cottura: Frying, Grilling, Baking, Steaming, Used in fish balls and surimi
- Valore nutrizionale: Good source of protein and omega-3 fatty acids.
Fatti chiave
Ambush Predatorbehavior
Saurida undosquamis is a classic ambush predator, burying itself in sand or mud with only its eyes exposed, waiting for prey to swim by.
Lessepsian Migrantevolution
This species has successfully migrated from the Red Sea into the Mediterranean Sea via the Suez Canal, becoming an established invasive species in the eastern Mediterranean.
Brush-like Teethinteresting
Its mouth is armed with numerous small, sharp, brush-like teeth, perfectly adapted for grasping slippery prey.
Commercial Fisheryinteresting
Despite its predatory nature, the Spotted Lizardfish is a significant component of commercial fisheries throughout its range, often caught by trawling.
Informazioni di sicurezza
Maneggiare con cura- Livello di sicurezza: caution
- Velenoso: No
- Commestibilità: edible
- Note sul maneggio: While not venomous, Saurida undosquamis possesses numerous sharp teeth. Care should be taken when handling to avoid bites, especially when removing from fishing gear. Its body is also covered in fine, easily detached scales that can be irritating.
Specie simili
Shortfin Lizardfish
Saurida argentea
Saurida argentea has shorter pectoral fins that do not reach the origin of the dorsal fin, and generally lacks the distinct dark blotches of S. undosquamis. It also typically has fewer lateral line scales (45-49).
Gracile Lizardfish
Saurida gracilis
Saurida gracilis has a more slender body and typically exhibits more distinct, saddle-like blotches on its dorsal surface. Its pectoral fins are also shorter than those of S. undosquamis.
Greater Lizardfish
Saurida tumbil
Saurida tumbil generally has a larger maximum size, a more robust body, and typically has fewer lateral line scales (42-48). Its coloration is often more uniform without the prominent spotting of S. undosquamis.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Aulopiformes
- Famiglia
- Synodontidae
- Genere
- Saurida
- Specie
- undosquamis
Esplora Spotted Lizardfish
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