Scientific Name
Johnius amblycephalus  
Johnius amblycephalus鈍頭叫姑魚
by: Lab of Fish Ecol. and Evo., BRCAS
Author (Bleeker, 1855) Depth 3 - 40M
Chinese 鈍頭叫姑魚 Poisonous Fish No 
Family_Chinese 石首魚科 Economic Fish Yes 
Family F381 Sciaenidae Edible Fish Yes  Chinese In Mainland China 團頭叫姑魚 
Max Length 25 cm  Aquarium Fish No  Common Name 黑加網、黑口(澎湖)、臭肚仔(澎湖) 
Distribution in World India Ocean to West Pacific Ocean   Distribution in Taiwan West、South、PonFu 
Habitats Benthos、Estuary、Coastal  Holotype Locality Amboina 
Synonyms Blythia dussumieri, Dendrophysa dussumieri, Dendrophysa russelli, Johnius amblycephala, Johnius dussumieri, Johnius macropterus, Sciaena dussumieri, Sciaena dussumieri, Umbrina amblycephala, Umbrina amblycephalus, Umbrina dussumieri, Umbrina muelleri, Umbrina mülleri ...all 13..  
Reference 臺灣魚類誌(沈等, 1993);福建魚類誌(朱等, 1985);The Live Marine Resources of the Western Central Pacific, Vol.5(FAO, 2001)  P. Bleeker 1855 朱元鼎 編 1985 沈世傑 編 Shih-Chieh Shen ed. 1993 
Specimen List ASIZP0058600. ASIZP0059867. ASIZP0062285. ASIZP0063559. ASIZP0064289. ASIZP0065216. ASIZP0065217. ASIZP0066426. ASIZP0066429. ASIZP0066441. ASIZP0700229. ASIZP0801121. ASIZP0801122. ASIZP0801930. ASIZP0801931. ASIZP0801932. ASIZP0802625. ASIZP0911121. ASIZP0911122. ASIZP0911930. ASIZP0911931. ASIZP0911932. CAS28194. FRIP00991. FRIP22110. NMMBP04092. NMMBP04137. NMNSF00486. NMNSF00950. NTMP0485. NTUM07156. NTUM07157. NTUM07158. NTUM07159. NTUM07160. NTUM07213. NTUM07284. ...List all 52 records... 
Common Name Bearded jewfish; Bearded croaker; Greenback croaker 
Redlist Status NL Not in IUCN Redlist     
Characteristic Dorsal fin X, I, 23-27; anal fin II, 7-8; pectoral fin I, 16-18; ventral fin I, 5; lateral-line scales 45-48; gill-rakers 3-4 + 8-11. Body elongated and compressed. A medium-sized species with a rounded, projecting snout and an inferior mouth; length of the upper jaw longer than lower one Lower jaw less than 1/2 of head length; a blunt barbell on chin. 5 marginal pores and 3 rostral pores; 5 mental pores and the median divided. Gill rakers short and thin. Sagitta morphology refered to as the Johnius form, sagitta moderately triangular, with prominent postcentral umbo on outer surface; inner (medial) surface convex with a tadpole-shaped impression, which head semicircle, tail with conical pit. Caudal fin rhomboid. Lining of body cavity with lightly brown specks. Swim-bladder morphology refered to as the Johnius form, swimbladder hammer-shaped, with 14 to 16 pairs of appendages, branched in a fan manner. The first branching in the head. Colour: body blackish brown above and dark brown with lightly silver below; all fins dark brown, tip of caudal fin black; operculum bluish purple, with a dark spot between two flattened spines. Gill chamber light brown, mouth lining pink.
habitats Found in shallow coastal waters and estuaries 
Distribution South, Pon_Fu, West. 
Utility Foodfish, marketed fresh.