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The Brown-banded bambooshark (Chiloscyllium punctatum) is a small, bottom-dwelling shark belonging to the family Hemiscylliidae. It is characterized by its slender body, short snout, and prominent nasal barbels. Juveniles typically display distinct dark brown bands over a lighter background, which tend to fade or break into spots as the shark matures, though some banding may persist. This species is known for its hardiness and adaptability, making it a popular choice in public aquariums and among private aquarists.
Physical Characteristics
- Body shape
- elongated
- Coloration
- Juveniles exhibit distinct dark brown to black bands on a light tan to yellowish-brown background. These bands typically number 10-13 on the body and 5-7 on the tail. As they mature, the bands often fade, break up into spots, or become less defined, though some individuals retain prominent banding. The ventral surface is typically pale.
- Scale type
- placoid
- Mouth position
- subterminal
- Distinctive features
- Short snout with prominent nasal barbels extending to the mouth, Small mouth positioned subterminally, Spiracles present below the eyes, Two spineless dorsal fins, the first originating over or slightly behind the pelvic fin bases, Anal fin present, located close to the caudal fin, Long, slender caudal fin without a distinct lower lobe
- Dorsal fin
- Two dorsal fins of similar size, spineless. The first dorsal fin originates over or slightly behind the pelvic fin bases. The second dorsal fin is positioned just anterior to the anal fin.
- Tail fin
- Long, slender, and tapering caudal fin (tail fin) without a distinct lower lobe. The upper lobe has a subterminal notch.
- Pectoral fin
- Broad and rounded pectoral fins.
- Distinctive fins
- Pelvic fins are relatively large and rounded. Anal fin is present and distinct, located close to the caudal fin.
Identification Tips
Body Pattern
Look for distinct dark brown bands on a lighter body, especially in juveniles. Adults may have faded bands or spots.
Nasal Barbels
Prominent, elongated barbels extending from the nostrils to the mouth are a key characteristic of bamboosharks.
Dorsal Fin Origin
The first dorsal fin originates over or slightly behind the pelvic fin bases, which helps distinguish it from some other shark species.
Caudal Fin
The long, slender, and tapering caudal fin without a distinct lower lobe is characteristic.
Habitat
- Water type
- saltwater
- Depth
- Typically found in shallow coastal waters, from the intertidal zone down to about 110 meters (360 feet), but most commonly in less than 30 meters (100 feet).
- Environment
- Inhabits coral reefs, rocky areas, tide pools, and seagrass beds. Prefers sandy or muddy bottoms where it can forage and rest. Often found in crevices or under ledges during the day.
- Geographic range
- Indo-West Pacific: Persian Gulf, India, Sri Lanka, Malaysia, Singapore, Indonesia, Thailand, Vietnam, China, Taiwan, Japan, Philippines, Papua New Guinea, and northern Australia.
Aquarium Information
- Care level: intermediate
- Temperament: peaceful
- Diet: carnivore
- Minimum tank size: 180 gallons (680 liters) for juveniles, significantly larger for adults (300+ gallons/1135+ liters)
- Temperature: 72-78°F (22-26°C)
- pH level: 8.1-8.4
- Hardness: 8-12 dKH
- Compatibility: Generally compatible with other peaceful, non-aggressive fish that are too large to be considered prey. Avoid housing with aggressive or fin-nipping species. Not suitable for reef tanks with small invertebrates.
- Special requirements: Requires a well-established, mature aquarium with excellent filtration and strong oxygenation. A soft sand substrate is essential to prevent abrasion to their sensitive undersides and allow for natural foraging behavior. Ample hiding places (caves, overhangs) are crucial. They are nocturnal and will spend much of the day resting. Tank must be securely covered as they are known to jump.
Wild Information
- Conservation status: near threatened
- Seasonality: Breeds year-round in tropical waters, with peak activity varying by region. No distinct seasonal migration patterns.
- Market price: Variable, often traded for the aquarium industry. Limited commercial fishery value.
- Commercial importance: low
- Taste: Not commonly consumed; generally considered to have a mild, somewhat firm flesh.
- Texture: Firm, flaky.
- Cooking methods: Grilled, Fried, Baked
- Nutritional value: Similar to other shark species, it would be a source of protein and omega-3 fatty acids, though not a primary food fish.
Key Facts
Nocturnal Hunterbehavior
Brown-banded bamboosharks are primarily nocturnal, spending their days resting in sheltered areas and emerging at night to forage for food.
Egg-laying Sharkbehavior
This species is oviparous, meaning it lays eggs. The eggs are encased in leathery egg cases, often referred to as 'mermaid's purses', which are typically anchored to the substrate.
Walking Shark Relativeinteresting
While not a 'walking shark' in the strict sense of the genus Hemiscyllium, bamboosharks are closely related and share the ability to 'walk' on their pectoral and pelvic fins across the seafloor.
Hardy Aquarium Speciesinteresting
Due to their relatively small size (for a shark), docile nature, and adaptability, Brown-banded bamboosharks are one of the most commonly kept shark species in home aquariums, though they still require very large tanks.
Color Change with Agebehavior
Juveniles exhibit striking brown bands, which often fade or break into spots as they mature, providing a natural camouflage change as they grow.
Safety Information
Safe- Safety level: safe
- Venomous: No
- Edibility: not recommended
- Handling notes: Generally docile and not considered dangerous to humans. Can be handled with care, but like all sharks, they possess small, sharp teeth and can bite if provoked or stressed. Avoid direct contact with the mouth. Best observed without direct handling.
Similar Species
Whitespotted bambooshark
Chiloscyllium plagiosum
Typically has numerous small white spots on a dark background, rather than distinct brown bands. The bands, if present, are usually less defined and often broken into spots even in juveniles.
Grey bambooshark
Chiloscyllium griseum
Generally uniform greyish-brown coloration without prominent bands or spots, though juveniles may have faint banding. The snout is often slightly longer and more pointed.
Slender bambooshark
Chiloscyllium indicum
Possesses a more slender body and often has a series of dark saddles or blotches rather than distinct bands. The nasal barbels are typically shorter.
Scientific Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Chondrichthyes
- Order
- Orectolobiformes
- Family
- Hemiscylliidae
- Genus
- Chiloscyllium
- Species
- punctatum
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