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Syngnathus acus, commonly known as the Greater Pipefish, is a fascinating marine fish belonging to the family Syngnathidae, which also includes seahorses. It is characterized by its elongated, slender body, resembling a straight stick or a piece of seaweed, allowing it to blend seamlessly into its environment. This species is a master of camouflage, often found swaying gently with aquatic vegetation, making it difficult to spot. Like other pipefishes, the male carries the eggs in a brood pouch, a unique reproductive strategy.
Caratteristiche fisiche
- Forma del corpo
- eel-like
- Colorazione
- Highly variable, ranging from green, brown, yellow, to reddish, often mottled or banded to match their surroundings (e.g., seagrass, algae, sand). This cryptic coloration provides excellent camouflage.
- Tipo di squame
- none
- Posizione della bocca
- terminal
- Caratteristiche distintive
- Extremely elongated, slender body, almost stick-like., Small, tubular mouth at the end of a long snout., Absence of pelvic fins., Small, fan-like caudal fin., Body covered in bony rings rather than scales.
- Pinna dorsale
- Single, relatively short dorsal fin located towards the posterior half of the body, typically with 35-46 soft rays.
- Pinna caudale
- Small, fan-shaped caudal fin, often rounded, with 10-11 rays.
- Pinna pettorale
- Small, rounded pectoral fins, typically with 16-20 rays.
- Pinne distintive
- No pelvic fins. Anal fin is very small, with 3-4 rays.
Consigli per l'identificazione
Body Shape
Look for an exceptionally long, thin, and rigid body, resembling a straight stick. Length can reach up to 50 cm, though typically 30-35 cm.
Snout
Observe the long, tubular snout with a small, upward-pointing mouth at the tip.
Fins
Note the absence of pelvic fins, the small dorsal fin, and the tiny, fan-like caudal fin. The pectoral fins are also small.
Coloration
Its cryptic coloration, often mottled browns, greens, or yellows, helps it blend with seagrass or algae. Look for patterns that mimic its surroundings.
Bony Rings
The body is encased in a series of bony rings, which are visible upon close inspection, rather than traditional scales.
Habitat
- Tipo di acqua
- saltwater
- Profondità
- Typically found in shallow coastal waters from 1 to 15 meters, but can be found down to 100 meters.
- Ambiente
- Prefers sheltered areas with abundant seagrass beds (e.g., Posidonia oceanica, Zostera marina), macroalgae, rocky reefs, and sandy or muddy bottoms where they can camouflage effectively.
- Areale geografico
- Widespread in the Eastern Atlantic Ocean, from Norway and the British Isles south to Morocco, including the Mediterranean Sea and the Black Sea. Also found around the Canary Islands and Madeira.
Informazioni sull'acquario
- Livello di cura: advanced
- Temperamento: peaceful
- Dieta: carnivore
- Dimensione minima della vasca: 75 gallons (280 liters)
- Temperatura: 68-75°F (20-24°C)
- Livello di pH: 8.1-8.4
- Durezza: 8-12 dKH
- Compatibilità: Best kept in a species-specific tank or with very peaceful, slow-moving tank mates that will not outcompete them for food. Avoid aggressive or fast-feeding fish.
- Requisiti speciali: Requires a well-established aquarium with plenty of live rock, macroalgae, and seagrass for hiding and perching. Excellent water quality is paramount. Feeding can be challenging as they prefer live foods and are slow, deliberate feeders. A refugium can be beneficial for cultivating copepods and amphipods.
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: Breeding typically occurs from spring to late summer, with peak activity in warmer months. They are present year-round in their habitats.
- Prezzo di mercato: Low (primarily for aquarium trade, not food)
- Importanza commerciale: low
- Sapore: Not typically consumed due to small size and bony structure.
- Consistenza: Not applicable.
- Valore nutrizionale: Not applicable.
Fatti chiave
Male Pregnancybehavior
Like seahorses, male Greater Pipefish are responsible for carrying the eggs in a specialized brood pouch located on their ventral side. The female deposits her eggs into this pouch, where the male fertilizes and incubates them until hatching.
Master of Camouflageamazing
Their elongated, stick-like body and variable coloration allow them to blend almost perfectly with seagrass blades or algae, making them incredibly difficult to spot by predators and prey alike.
Ambush Predatorbehavior
Despite their slow movement, pipefish are effective ambush predators. They wait patiently, camouflaged, and then rapidly suck in small crustaceans and other invertebrates with their tubular snout when prey comes close.
No Scalesinteresting
Instead of scales, the Greater Pipefish's body is protected by a series of bony rings, providing a rigid, armored exterior.
Unique Feeding Mechanismbehavior
Their specialized tubular mouth acts like a pipette, creating a strong suction force to draw in small prey items from a short distance.
Informazioni di sicurezza
Sicuro- Livello di sicurezza: safe
- Velenoso: No
- Commestibilità: not recommended
- Note sul maneggio: Syngnathus acus is not venomous and poses no threat to humans. Handle with care if encountered, as their delicate bodies can be easily damaged. They are best observed in their natural habitat.
Specie simili
Broadnosed Pipefish
Syngnathus typhle
S. typhle has a shorter, broader snout and a more compressed body compared to the very slender and long-snouted S. acus. The dorsal fin of S. typhle is also typically shorter with fewer rays (28-34).
Straightnose Pipefish
Nerophis ophidion
N. ophidion lacks a caudal fin entirely, ending in a pointed tail, whereas S. acus possesses a small, fan-shaped caudal fin. Nerophis species also tend to be even more slender and eel-like.
Snake Pipefish
Entelurus aequoreus
E. aequoreus is generally much larger (up to 60 cm) and lacks both pectoral and caudal fins, having a long, tapering tail. It also has a more pronounced keel on its body.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Syngnathiformes
- Famiglia
- Syngnathidae
- Genere
- Syngnathus
- Specie
- Syngnathus acus
Esplora Greater Pipefish
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