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Doryichthys boaja, commonly known as the Red-tailed pipefish, is a fascinating freshwater pipefish species belonging to the family Syngnathidae. It is characterized by its elongated, slender body, typical of pipefishes, and a distinctive reddish caudal fin in mature individuals. This species is known for its cryptic coloration, allowing it to blend seamlessly with its aquatic environment, particularly among submerged vegetation and leaf litter. Like other pipefishes, the male carries the eggs in a brood pouch.
Physical Characteristics
- Body shape
- eel-like
- Coloration
- Body coloration is typically mottled brown, green, or yellowish, often with darker bands or spots that aid in camouflage. The most distinguishing feature is the caudal fin, which is often reddish or orange, especially in mature individuals, giving it its common name. Some individuals may exhibit iridescent blue or green spots along the body.
- Scale type
- none
- Mouth position
- superior
- Distinctive features
- Elongated, slender body encased in bony rings, Small, tubular mouth, Distinctive reddish or orange caudal fin in adults, Absence of pelvic fins, Small, fan-like dorsal fin
- Dorsal fin
- Single, small, and fan-like, typically with 30-40 soft rays, positioned towards the posterior half of the body.
- Tail fin
- Small, rounded to slightly spatulate, often reddish or orange, especially in mature specimens.
- Pectoral fin
- Small and rounded, located just behind the operculum.
- Distinctive fins
- Pelvic fins are absent. Anal fin is very small or absent.
Identification Tips
Body Shape
Look for a very slender, elongated body, almost like a twig, covered in bony rings rather than scales.
Caudal Fin Color
The most reliable identifier is the reddish or orange caudal (tail) fin, particularly prominent in adult specimens.
Snout
Observe the relatively short, tubular snout compared to some other pipefish species.
Habitat
Its presence in freshwater environments distinguishes it from many marine or brackish pipefish species.
Habitat
- Water type
- freshwater
- Depth
- Typically found in shallow waters, often less than 2 meters (6.5 feet).
- Environment
- Inhabits slow-moving to moderately flowing freshwater rivers, streams, and sometimes flooded forests. They prefer areas with dense submerged vegetation, leaf litter, and root systems, which provide both camouflage and hunting grounds. They are often found near the banks or in backwaters.
- Geographic range
- Southeast Asia, including countries such as Thailand, Malaysia, Singapore, Indonesia (Sumatra, Borneo, Java), and potentially parts of Vietnam and Cambodia. Its distribution is primarily within the Sundaic region.
Aquarium Information
- Care level: advanced
- Temperament: peaceful
- Diet: carnivore
- Minimum tank size: 30 gallons
- Temperature: 24-28°C (75-82°F)
- pH level: 6.0-7.5
- Hardness: 5-15 dGH
- Compatibility: Best kept in a species-specific tank or with very small, peaceful, slow-moving fish that will not outcompete them for food. Avoid aggressive or fast-moving tank mates.
- Special requirements: Requires a well-planted aquarium with plenty of hiding spots, gentle water flow, and a mature filtration system. Live foods are essential for their diet. They are sensitive to water quality fluctuations and require stable parameters. A secure lid is necessary as they can jump.
Wild Information
- Conservation status: least concern
- Seasonality: Breeding typically occurs during warmer, wetter seasons, but specific seasonality can vary across its wide geographic range.
- Market price: Varies, often moderate to high due to specialized care requirements and limited availability.
- Commercial importance: low
- Taste: Not typically consumed due to small size and bony structure.
- Texture: Not typically consumed.
- Nutritional value: Not typically consumed.
Key Facts
Male Parental Carebehavior
Like all pipefishes and seahorses, the male Red-tailed pipefish is responsible for carrying the eggs in a specialized brood pouch located on his ventral side.
Ambush Predatorbehavior
Red-tailed pipefish are ambush predators, relying on their excellent camouflage to hide among vegetation and wait for small invertebrates to pass by, which they then suck up with their tubular mouths.
Cryptic Camouflageamazing
Their mottled body coloration and elongated shape allow them to mimic submerged twigs or plant stems, making them incredibly difficult to spot in their natural habitat.
Freshwater Specialistinteresting
Unlike many pipefish species that inhabit marine or brackish waters, Doryichthys boaja is a true freshwater species, adapted to riverine environments.
Safety Information
Safe- Safety level: safe
- Venomous: No
- Edibility: not recommended
- Handling notes: Red-tailed pipefish are delicate and should be handled with extreme care, preferably by scooping them in a container rather than netting, to avoid damaging their fragile bodies and fins. They are not venomous and pose no threat to humans.
Similar Species
Short-tailed pipefish
Doryichthys deokhatoides
D. deokhatoides typically has a shorter caudal fin and generally lacks the prominent reddish coloration seen in D. boaja. Its body is often more uniformly brown or grey.
Long-snouted pipefish
Doryichthys martensii
D. martensii possesses a noticeably longer and more slender snout compared to D. boaja. Its coloration is also typically more subdued, lacking the distinct red tail.
Freshwater pipefish
Microphis brachyurus
While also a freshwater pipefish, M. brachyurus often has a more robust body and a shorter snout. Its caudal fin is typically dark or translucent, not reddish.
Scientific Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Syngnathiformes
- Family
- Syngnathidae
- Genus
- Doryichthys
- Species
- Doryichthys boaja
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