Bend Stick Pipefish

Brownish in color, usually with small spots on trunk (Ref. 4281).Description: Characterized by variable color, ranging from whitish or yellowish to blackish; usually 9 caudal rays in juvenile, vestigial or absent in adult; rings 21-24 + 55-63; discontinuous superior trunk and tail ridges; inferior trunk ridge ends at anal ring; confluent lateral trunk ridge with inferior tail ridge; length of snout 1.5-2.0 in head length; depth of snout 5.2-11.1 in snout length; head length 9.9-13.0 in SL (Ref. 90102).

Male carries the eggs in a brood pouch (Ref. 205).

Dorsal spines (total): 0; Dorsal soft rays (total): 24 - 32; Analspines: 0; Analsoft rays: 4

Inhabits subtidal lagoon and seaward reefs, usually among algae or seagrasses (Ref. 9710). Common around rocky reefs (Ref. 9137). Feeds on small crabs and fish larvae (Ref. 9137).

Inhabits subtidal lagoon and seaward reefs, usually among algae or seagrasses (Ref. 9710). Most are seen on sand and mud areas, prone to currents; usually soft bottom to about 25 m (Ref. 48635). Ovoviviparous (Ref. 205). The male carries the eggs in a brood pouch which is found under the tail (Ref. 205).

分布於印度-西太平洋區，由紅海與東非到密克羅尼西亞的馬里亞納群島，北至日本南部，南至新加勒多尼亞。臺灣發現於澎湖。

小型魚類，偶為潛水捕獲，除學術研究及水族觀賞外，不具食用價值。

體特別的延長和纖細，無鱗，由一系列的骨環所組成；軀幹部的上側稜與尾部上側稜不相連接，體環於背鰭基底處拱起，下側稜終止於尾環，中側稜與尾部下側稜相接。吻稍長，頭長約為其1.5-2.0倍；吻部背中稜完全，無棘而平滑，在鼻孔附近些微隆起。主鰓蓋具一隆起而向上彎曲之稜背。體環邊緣平滑；或有皮瓣，或無。骨環21-24 + 55-63；背鰭鰭條數 24-32；胸鰭鰭條數 15-19；尾鰭鰭條數9。體色多變，由近白色至近全黑色，通常為淡黃褐色，軀幹上通常有淡色橫帶以及小的斑點散在。

主要棲息於亞潮間帶的潟湖與臨海礁石，通常在藻類或海草之中，但大部分在有水流的沙泥區域上被見到，深度大約可達 25 公尺。

Trachyrhamphus bicoarctatus, also known as the double-ended pipefish is a species of marine fish belonging to the family Syngnathidae. They can be found in reefs, seagrass beds, and sandy habitats throughout the Indo-Pacific from East Africa to New Caledonia and from Japan to Australia. Males of this species are considered mature when they reach approximately 26 centimeters long, but adults can grow to be lengths of 40 centimeters. Reproduction occurs through ovoviviparity in which males brood eggs before giving live birth.

Found on sand, rubble, or mixed reef substrates, usually among algae or seagrasses.