(Milkfishes) > Chanidae
Etymology: Chanos: Greek, chanos, -eos, ous, and chasma, -atos = abyss, mouth opened, inmensity (Ref. 45335).
More on author: Forsskål.
Environment: milieu / climate zone / depth range / distribution range
; समुद्री; स्वच्छ जल, अलवण जल; खारा बेनथोपिलाजिक; ऐम्फिढरोमस (Ref. 51243); गहराई सीमा 1 - 30 m (Ref. 6898), usually ? - 15 m (Ref. 89972). Tropical; 15°C - 43°C (Ref. 43081); 46°N - 52°S, 19°E - 77°W
Indo-Pacific: along continental shelves and around islands, where temperatures are greater than 20°C. Red Sea and South Africa to Hawaii and the Marquesas, north to Japan, south to Victoria, Australia. Eastern Pacific: San Pedro, California to the Galapagos.
Length at first maturity / आकार / वज़न / Age
Maturity: Lm 86.1, range 68 - 70 cm
Max length : 180 cm SL पुल्लिंग / अलिंग; (Ref. 9710); 124.0 cm SL (female); common length : 100.0 cm SL पुल्लिंग / अलिंग; (Ref. 9814); अधिकतम प्रकाशित वज़न: 14.0 kg (Ref. 9814); अधिकतम सूचित उम्र: 15 वर्षो (Ref. 9814)
पृष्ठीय रीढ़ (सम्पूर्ण): 2; पृष्ठीय सौफट रेज़ (सम्पूर्ण): 13-17; गुदा कांटा 2; ऐनल सौफट रेज़: 8 - 10; जानवरों की रीड़ का जोड़: 46. This species is characterized by the following: body elongate and somewhat compressed; mouth small and toothless; single dorsal about mid-level of the body; pectoral fins falcate; caudal fin large and deeply forked; no scutes on belly; branchiostegal rays 4. Colour of the body olive green dorsally; flanks silvery; unpaired fins with dark margins (Ref. 49, 117228).
Adults are found in offshore marine waters and shallow coastal embayments, but also frequently enter estuaries and occasionally penetrate freshwater streams (Ref. 44894, 52331). They occur in small to large schools near the coasts or around islands where reefs are well developed. Eggs and larvae are pelagic up to 2-3 weeks. Older larvae migrate onshore and settle in coastal wetlands (mangroves, estuaries) during the juvenile stage, or occasionally enter freshwater lakes. Juveniles and sub-adults return to sea where they mature sexually. Mature adults spawn only in fully saline water. Larvae eat zooplankton; juveniles and adults eat cyanobacteria, soft algae, small benthic invertebrates, and even pelagic fish eggs and larvae. Larvae are collected from rivers and are grown in culture ponds into juveniles which are marketed fresh, smoked, canned or frozen. Brood stocks can be raised and spawned in captivity to produce larvae in the hatchery (Ref. 12868). This species can thrive and grow in water as hot as 32° C (Ref. 9987).
Spawns in clear shallow waters above a bottom of sand or coral and at a distance of not more than 30 km from the shore. Females spawn up to 5 million eggs which hatch in about 24 hr. The larvae seek out clear coastal and estuarine waters warmer than 23°C with 10-32 salinity and abundant phytoplankton. Spawning and fertilization take place at night.
Bagarinao, T., 1994. Systematics, distribution, genetics and life history of milkfish, Chanos chanos. Environ. Biol. Fishes 39(1):23-41. (Ref. 9814)
IUCN Red List Status (Ref. 125652)
Threat to humans
मात्स्यिकी: उच्च वाणिज्य; जलीयकृषि: व्यापारिक; आखेट मत्स्य: हां; ठहराव / प्रलोभन: usually
Estimates based on models
Preferred temperature (Ref. 115969
): 20.7 - 29.2, mean 28.2 °C (based on 4182 cells).
Phylogenetic diversity index (Ref. 82805
= 1.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00655 - 0.01107), b=3.06 (2.98 - 3.14), in cm total length, based on LWR estimates for this species (Ref. 93245
Trophic level (Ref. 69278
): 2.4 ±0.20 se; based on food items.
लौटाव (Ref. 120179
): निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (tm=4-8; tmax=15; Fec=200,000).
Prior r = 0.28, 95% CL = 0.16 - 0.49, Based on 3 stock assessments.
Fishing Vulnerability (Ref. 59153
): Very high vulnerability (76 of 100) .
Climate Vulnerability (Ref. 125649
): High to very high vulnerability (66 of 100) .
Nutrients (Ref. 124155
): Calcium = 61.9 [29.9, 124.1] mg/100g ; Iron = 0.672 [0.397, 1.225] mg/100g ; Protein = 19.4 [15.2, 22.0] % ; Omega3 = 0.248 [0.112, 0.531] g/100g ; Selenium = 91.1 [37.2, 226.4] μg/100g ; VitaminA = 11.3 [2.7, 41.9] μg/100g ; Zinc = 1.34 [0.84, 2.19] mg/100g (wet weight); based on nutrient studies.