South Pacific Striped Triplefin

Male blackish on fins and anterior three-fourths of body , and yellow caudal-fin with median black band. Female yellowish with 3 broad, greyish double bars divided by thin grey line, broad black bar at base of caudal-fin, and greyish head with brown markings. Head, chest, and pectoral-fin base scaleless; long and slender orbital tentacle; mandibular pores 3-4 + 3-4 + 3-4. Maximum size to 3.2 cm TL (Ref. 90102).

Dorsal spines (total): 14 - 18; Dorsal soft rays (total): 7 - 11; Analspines: 1; Analsoft rays: 15 - 20

Adults are found in coral and rocky reefs (Ref. 90102). Eggs are hemispherical and covered with numerous sticky threads that anchor them in the algae on the nesting sites (Ref. 240). Larvae are planktonic which occur primarily in shallow, nearshore waters (Ref. 94114). Feeds on small benthic invertebrates (Ref. 89972).

fisheries: of no interest

分布於西太平洋區，北從台灣、菲律賓、泰國灣、帛琉及巴布亞新幾內亞至社會群島及馬貴斯群島(Marquesas Is.)。

小型魚類，僅具學術研究價值。

體形小，圓柱狀。上頜向後延伸至瞳孔前緣下方；雄魚吻部長於雌魚；齒小，上下頜具椎形齒；鋤骨及腭骨前端具齒群。眼眶上緣觸角細長，呈葉狀。鼻瓣膜為葉狀。後顳骨枝稍彎曲，呈”I”形。頤部感覺孔 3-4 + 3-4 + 3-4。頭部、胸部及胸鰭基部無鱗。體櫛鱗，尾柄圓鱗。側線不連續，分為前後二段，前段側線為孔鱗15-20個，孔鱗側線從胸鰭基後方即稍下降，末端位於第二背鰭倒數第三硬棘下方；後段側線具2列缺刻鱗15-20個，末端止於尾柄。側線上鱗列 4 + 2 + 4。D. III+XI-XII+7-11； A. I+15-20； P. ii-iii + 5-7 + vi-viii (15-20)；L.l. 15-20 + 15-20。背鰭低矮，分成三枚，但長度不超過第二背鰭第一軟條；臀鰭起始於第一0側線孔鱗下；胸鰭末端達第六至第七臀鰭鰭膜。雄魚體側前端3/4處及各鰭條黑色，尾鰭黃色，中間具黑色橫紋；雌魚頭部灰色具灰色斑紋，體側黃色，具3-4條鑲灰邊棕色寬大橫紋。(李承運、林沛立2012/11編寫)

主要棲息於珊瑚礁及岩礁，水深1-8m。以藻類為食。

Enneapterygius rhabdotus, the umpire triplefin or South Pacific striped triplefin, is a species of triplefin blenny in the genus Enneapterygius. It was described by Ronald Fricke in 1994. This species occurs in the western central Pacific Ocean the Izu Peninsula in Japan, Taiwan, Batanes and Palawan in the northern Philippines, the Gulf of Thailand, Palau, and most of Melanesia east to the Pitcairn Islands.