Chefoo Thryssa

Belly with 16 to 18 + 9 or 10 = 25 to 28 keeled scutes from isthmus to anus. Maxilla short, not reaching back beyond hind border of pre-operculum; first supra-maxilla long, at least half length of second. Lower gill rakers with serrae not distinctly clumped.

Dorsal spines (total): 0; Analspines: 0; Analsoft rays: 25 - 31

Presumably marine, pelagic and schooling, but more data needed based on correct identifications.

分布於西太平洋區。由越南至韓國沿海。臺灣分布於西部、南部、北部及澎湖沿海。

主要漁法為焚寄網、底拖網及流刺網，全年可產，西部沿海產量較豐，體薄肉少，通常曬成魚乾出售，或製成魚粉作為飼料之原料。

體甚側扁，腹部在腹鰭前後均有一排銳利的稜鱗，腹鰭前15-16個，腹鰭後8-9個，共約23-25個。頭略小，側扁。吻鈍，吻長明顯短於眼徑。口大傾斜；上頜骨末端尖但略短，達主鰓蓋骨末緣或僅超出一些；第一鰓弓下枝鰓耙數26-32。體被圓鱗，鱗中大，易脫落，無側線；背鰭前方具1小棘，胸、腹鰭具腋鱗。背鰭起始於體中部，具14-15軟條；臀鰭長，具33-36分枝之軟條；尾鰭叉形。體背部青灰色，具暗灰色帶，側面銀白色；鰓蓋上方之頸部有黑色鞍狀斑。背鰭、胸鰭及尾鰭黃色或淡黃色；腹鰭及臀鰭淡色。

近沿海表層魚類，濾食浮游生物為生，具群游性。多於表層至20公尺深之海域活動。

Thryssa chefuensis, the Chefoo thryssa, is a species of ray-finned fish in the family Engraulidae. It is found in the Western Pacific Ocean.