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Chitala chitala, commonly known as the Clown Knifefish or Indian Featherback, is a large, predatory freshwater fish belonging to the family Notopteridae. It is characterized by its distinctive knife-like body shape, silvery coloration, and a series of prominent black spots along its flank. This species is highly valued both as a food fish and as an ornamental fish in large aquariums due to its unique appearance and graceful swimming motion. It is primarily nocturnal and preys on smaller fish and invertebrates.
Ciri-ciri Fizikal
- Bentuk badan
- compressed
- Warna
- Silvery-grey to brownish-grey dorsally, fading to silvery-white ventrally. Juveniles often have more pronounced spots and sometimes faint vertical bars. Adults typically display 5-10 large, ocellated (eye-like) black spots, often ringed with white or yellow, along the lower flank, above the anal fin.
- Jenis sisik
- cycloid
- Kedudukan mulut
- superior
- Ciri tersendiri
- Deeply compressed, knife-like body, Long, confluent dorsal and anal fins forming a single undulating fin along most of the body, Small, pointed head with a large mouth, Absence of a true dorsal fin (represented by a series of small, separate finlets in some related species, but not prominent in Chitala chitala), Prominent black spots on the lower flank
- Sirip dorsal
- A very small, inconspicuous dorsal fin, often described as a series of small rays or absent, located far forward on the back.
- Sirip ekor
- Small, rounded, and confluent with the anal fin.
- Sirip pektoral
- Small and fan-shaped, located low on the body.
- Sirip tersendiri
- The anal fin is extremely long, extending from behind the pectoral fins to the caudal fin, and is confluent with the caudal fin, giving the fish its characteristic undulating swimming motion. This fin is used for propulsion and maneuvering.
Petua Pengenalan
Body Shape
Look for the highly compressed, knife-like body that tapers to a point at the tail.
Fin Structure
Observe the extremely long anal fin that merges with the caudal fin, creating a continuous, undulating structure.
Spot Pattern
Count the number and examine the arrangement of the large, ocellated black spots along the lower flank. Chitala chitala typically has 5-10 distinct spots.
Dorsal Fin
Note the very small or almost absent dorsal fin, distinguishing it from some other knifefish species.
Habitat
- Jenis air
- freshwater
- Kedalaman
- Typically found in deeper sections of rivers, lakes, and reservoirs, often near submerged vegetation or structures.
- Persekitaran
- Prefers slow-moving to still waters, including large rivers, oxbow lakes, floodplains, and reservoirs. They are often found in areas with dense aquatic vegetation or submerged roots and branches, providing cover for ambush predation.
- Julat geografi
- Native to South and Southeast Asia, specifically in the Indus, Ganges, Brahmaputra, Mahanadi, and other major river systems of India, Bangladesh, Nepal, and Pakistan. Introduced populations exist in other parts of the world due to aquaculture and the aquarium trade.
Maklumat Akuarium
- Tahap penjagaan: advanced
- Perangai: aggressive
- Diet: carnivore
- Saiz tangki minimum: 250 gallons (946 liters) for a single adult
- Suhu: 75-82°F (24-28°C)
- Tahap pH: 6.5-7.5
- Kekerasan air: 5-12 dGH
- Keserasian: Best kept alone or with very large, robust, and fast-moving tank mates that cannot be swallowed. Avoid smaller fish, slow-moving fish, and fish with long fins.
- Keperluan khas: Requires a very large aquarium with ample swimming space and plenty of hiding spots (caves, large driftwood). Dim lighting is preferred as they are nocturnal. Excellent filtration is crucial due to their large size and carnivorous diet. They are sensitive to water quality fluctuations.
Maklumat Liar
- Status pemuliharaan: least concern
- Musim: Spawning typically occurs during the monsoon season (June-August) when water levels rise.
- Harga pasaran: Variable, depending on size and region. Can be high for large specimens.
- Kepentingan komersial: high
- Rasa: Mild, slightly sweet
- Tekstur: Firm, flaky, with fine bones
- Kaedah memasak: Frying, Grilling, Steaming, Curries
- Nilai pemakanan: Good source of protein and omega-3 fatty acids.
Fakta utama
Undulating Swimmerbehavior
The Clown Knifefish propels itself primarily by undulating its long anal fin, allowing for precise and graceful movement both forwards and backwards.
Nocturnal Hunterbehavior
These fish are predominantly nocturnal predators, using their keen sense of smell and lateral line system to locate prey in low light conditions.
Electrosensitiveinteresting
Like other knifefish, Chitala chitala possesses electroreceptors that allow it to detect weak electrical fields generated by other organisms, aiding in navigation and prey detection in murky waters.
Parental Carebehavior
Male Clown Knifefish exhibit parental care, guarding the eggs after spawning until they hatch.
Longevityinteresting
In optimal conditions, Clown Knifefish can live for 10-15 years or even longer in captivity.
Maklumat keselamatan
Kendalikan dengan berhati-hati- Tahap keselamatan: caution
- Berbisa: Tidak
- Kebolehmakanan: edible
- Nota pengendalian: While not venomous, Chitala chitala possesses a sharp, knife-like body and can inflict deep cuts if handled carelessly, especially when struggling. Their mouths are also large and contain small, sharp teeth, so caution should be exercised to avoid bites. Always use appropriate tools like nets and gloves when handling. They are also very powerful and can jump, so secure lids are essential for aquariums.
Spesies serupa
Clown Knifefish
Chitala ornata
Chitala ornata, often also called Clown Knifefish, is native to Southeast Asia (Thailand, Cambodia, Laos, Vietnam). It typically has a greater number of smaller, more irregularly shaped spots (often 10-15 or more) that extend higher up on the body, and sometimes also has faint vertical bars. The spots in C. ornata are generally less perfectly ocellated than in C. chitala. Historically, C. ornata was often misidentified as C. chitala, leading to confusion in the trade.
Bronze Featherback
Chitala blanci
Chitala blanci is found in the Mekong basin. It lacks the prominent black spots of C. chitala and C. ornata, instead having a more uniform bronze or silvery coloration, sometimes with faint, irregular markings.
Giant Featherback
Chitala lopis
Chitala lopis is a much larger species, also from Southeast Asia, and typically lacks the distinct ocellated spots, having a more uniform silvery-grey body. It can reach significantly larger sizes than C. chitala.
Klasifikasi saintifik
- Kerajaan
- Animalia
- Filum
- Chordata
- Kelas
- Actinopterygii
- Ordo
- Osteoglossiformes
- Keluarga
- Notopteridae
- Genus
- Chitala
- Spesies
- Chitala chitala
Terokai Clown Knifefish
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