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Terapon jarbua is a widely distributed and euryhaline species of grunter, known for its distinctive striped pattern and robust body. It is a highly adaptable fish, thriving in a variety of coastal and estuarine habitats, and is often encountered in both marine and brackish waters, and occasionally in freshwater. This species is characterized by its predatory nature and opportunistic feeding habits.
Ciri-ciri Fizikal
- Bentuk badan
- compressed
- Warna
- Silvery-grey to brownish-grey dorsally, fading to white or silvery ventrally. Characterized by 3-4 prominent, dark, curved or wavy longitudinal stripes on the body, often extending onto the caudal fin. A distinct black blotch is typically present on the operculum (gill cover).
- Jenis sisik
- ctenoid
- Kedudukan mulut
- terminal
- Ciri tersendiri
- Three to four prominent, dark, curved longitudinal stripes on the body., A large black blotch on the operculum., Spiny dorsal fin with a deep notch., Strong opercular spines.
- Sirip dorsal
- Single dorsal fin, deeply notched, with 11-12 strong spines and 9-11 soft rays. The spinous portion is longer than the soft-rayed portion.
- Sirip ekor
- Slightly forked caudal fin, often with dark blotches or stripes extending from the body.
- Sirip pektoral
- Moderately sized, rounded pectoral fins.
- Sirip tersendiri
- Anal fin with 3 spines and 8-10 soft rays. Pelvic fins thoracic with 1 spine and 5 soft rays. The second anal fin spine is notably strong and long.
Petua Pengenalan
Body Stripes
Look for the characteristic 3-4 dark, curved or wavy longitudinal stripes on the body. These are a primary identifier.
Opercular Spot
A prominent black blotch on the gill cover (operculum) is consistently present.
Dorsal Fin
Note the deeply notched dorsal fin with a strong spinous anterior portion.
Anal Fin Spines
The second anal fin spine is typically very robust and elongated, a key feature for the family Terapontidae.
Habitat
- Jenis air
- brackish
- Kedalaman
- Typically found in shallow coastal waters, estuaries, mangrove areas, and lower reaches of rivers, from surface to about 20 meters (65 feet).
- Persekitaran
- Coastal marine waters, estuaries, mangrove swamps, tidal creeks, and occasionally freshwater rivers. Prefers areas with sandy or muddy bottoms, often near seagrass beds or rocky structures. Highly euryhaline, tolerating a wide range of salinities.
- Julat geografi
- Indo-West Pacific region, from the Red Sea and East Africa eastward to Samoa, northward to southern Japan, and southward to Australia.
Maklumat Akuarium
- Tahap penjagaan: intermediate
- Perangai: aggressive
- Diet: carnivore
- Saiz tangki minimum: 150 gallons (570 liters) for adults
- Suhu: 22-28°C (72-82°F)
- Tahap pH: 7.5-8.5
- Kekerasan air: 10-25 dGH
- Keserasian: Best kept in a species-specific tank or with other large, robust, and equally aggressive fish. Avoid keeping with smaller or docile species as they will be preyed upon.
- Keperluan khas: Requires a large tank with plenty of hiding places among rocks and driftwood. Excellent filtration is essential due to their predatory diet. Can be kept in brackish or marine setups, and some individuals can adapt to freshwater over time, though brackish is preferred for long-term health. They are known to jump, so a secure lid is necessary.
Maklumat Liar
- Status pemuliharaan: least concern
- Musim: Available year-round, with no specific peak season for fishing due to its widespread distribution and adaptability.
- Harga pasaran: Low to moderate, primarily for local consumption and bait.
- Kepentingan komersial: medium
- Rasa: Mild, slightly sweet
- Tekstur: Firm, flaky white flesh
- Kaedah memasak: Frying, Grilling, Steaming, Baking
- Nilai pemakanan: Good source of protein and omega-3 fatty acids.
Fakta utama
Euryhaline Masterbehavior
Terapon jarbua is remarkably euryhaline, meaning it can tolerate a wide range of salinities, from full marine to brackish, and even freshwater environments, making it highly adaptable to various coastal habitats.
Nocturnal Hunterbehavior
While often active during the day, Jarbua Terapons are known to be more active predators at night, using their keen senses to hunt for smaller fish and invertebrates.
Sound Productioninteresting
Like other grunters (Terapontidae), Terapon jarbua can produce sounds, often described as grunts or croaks, by vibrating their swim bladder. This is believed to be used for communication, especially during spawning or territorial displays.
Spiny Defensebehavior
The strong, sharp, and mildly venomous spines on its dorsal, anal, and opercular fins serve as an effective defense mechanism against predators.
Opportunistic Feederbehavior
This species is an opportunistic predator, feeding on a wide variety of prey including smaller fish, crustaceans, insects, and even detritus, showcasing its adaptability in diverse environments.
Maklumat keselamatan
Kendalikan dengan berhati-hati- Tahap keselamatan: caution
- Berbisa: Ya
- Kebolehmakanan: edible
- Nota pengendalian: The spines of Terapon jarbua, particularly those on the dorsal, anal, and operculum, are sharp and can inflict painful wounds. These spines are known to be mildly venomous, causing localized pain, swelling, and redness. Handle with extreme care, preferably using thick gloves or a towel to avoid direct contact with the spines. If stung, clean the wound thoroughly and apply heat (e.g., hot water immersion) to denature the protein-based venom, and seek medical attention if symptoms persist or worsen.
Spesies serupa
Small-scaled Terapon
Terapon puta
Terapon puta has straighter, more horizontal stripes that extend onto the caudal fin, and generally lacks the prominent opercular blotch of T. jarbua. Its body is also typically more elongated.
Largescale Terapon
Terapon theraps
Terapon theraps has fewer (usually 3) and broader, more horizontal stripes that do not curve as distinctly as in T. jarbua. The opercular blotch is less pronounced or absent, and its scales are larger.
Four-lined Terapon
Pelates quadrilineatus
Pelates quadrilineatus has four distinct, straight, dark longitudinal stripes and a smaller, less robust body. It also lacks the prominent opercular blotch and the strong second anal fin spine of T. jarbua.
Klasifikasi saintifik
- Kerajaan
- Animalia
- Filum
- Chordata
- Kelas
- Actinopterygii
- Ordo
- Perciformes
- Keluarga
- Terapontidae
- Genus
- Terapon
- Spesies
- Terapon jarbua
Terokai Jarbua Terapon
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