Snyder's Sandperch

This species is characterized by the following: D V,20-21 (usually 21); A I,16-18; 13-15 (rarely 13, usually 14) pectoral rays; 38-43 lateral-line scales; about 2-4 + 7-10 gill rakers; about 4 predorsal scales; ctenoid scales on cheek, in 4 horizontal rows; front of lower jaw with 8 canine teeth; vomerine teeth a broad chevron-shaped patch; with palatine teeth; upper edge of subopercle with a prominent sharp spine; serrae on opercular bones absent; body depth 4.15-4.75 in SL (21.20-24.1% SL); middle dorsal spine longest; membrane from last dorsal spine joined near base of first soft ray; body gray to reddish dorsally, white below with the edges of scales gray; a series of f5 broadly U-shaped dark brown bars on back, smaller posteriorly, or with a series of 5 double dark brown to black dashes, the anterior 2 with 1 above and 1 below lateral line; a series of 9 spots or short bars on lower side of body that may be blackish, reddish, or dusky yellow; small dark reddish spots, one per scale, often present scattered along side of body and on cheek; presence at side of snout of an iridescent pale blue line, and one beneath eye; lips with large dark blotches; usually presence of a midventral blackish spot on isthmus, often with a smaller black spot to each side anteriorly; edge of chin below lower lip dusky to blackish; spinous portion of dorsal fin may be entirely black, but usually blackish with large pale yellowish blotches in outer part; soft dorsal fin with rows of black to black-edged orange spots, the base of most rays black or with black upper ends of U-shaped marks extending into base of fin; anal fin base with a row of red spots, a red submarginal line, and a small black spot on penultimate membrane about one-third distance to margin; caudal fin with small blackish, dusky orange, or red spots, often with smaller white spots as well (Ref. 57562).

Pelagic spawner. A monandric species though some small males may develop directly from juveniles indicicating diandry (Ref. 103751).

Dorsal spines (total): 5; Dorsal soft rays (total): 20 - 21; Anal spines: 1 - 16; Analsoft rays: 18

Found in silty sand and rubble areas near reefs at depths of 10-40 m (Ref. 2334, 90102).

分布於西太平洋區，由日本南部到澳洲的昆士蘭省。台灣分布於西南部及澎湖海域。

中小型魚，可食用，唯魚體大小不一，亦常作下雜魚處理。一般均以底拖網捕獲，一支釣亦可釣獲。

體延長，近似圓柱狀，尾部略側扁；頭稍小而似尖錐形。吻尖而平扁。眼中大，上側位，稍突出於頭背緣。口中大，略傾斜；上頜略短於下頜；頜齒呈絨毛狀齒帶，外側列較大，下頜前端具犬齒8枚；鋤骨具齒，腭骨具齒。體被細鱗，側線簡單而完全；側線鱗數38-44。背鰭連續，硬棘部與軟條部間具深缺刻，具硬棘V，軟條21；臀鰭硬棘I，軟條16-18；胸鰭軟條14-15；尾鰭圓形。體側上半部具5個暗色V字形斑，體側中央有一淡色寬縱帶，下方有8-9個暗色橫斑；胸鰭基部有一黑斑。

主要棲息於礁區附近的泥沙與碎石區域。以魚類及底棲甲殼類動物為食物。

Parapercis snyderi, commonly known as Snyder's grubfish or U-mark sandperch, is a marine fish native to the waters off northern Australia and Indonesia. The specific name honours the ichthyologist John Otterbein Snyder who collected the type specimen with David Starr Jordan, one of the co-describers of the species, at Nagasaki.