Halieutopsis simula (Smith & Radcliffe 1912)

Disk rounded and compressed, with cranium moderately elevated and bulbous rostrum rising slightly above it and extending anterior to mouth. Ventral surface without tubercles. Very wide mouth with lower jaw projecting. Trilobed esca with masses of short filaments, except dorsal tip of dorsal lobe. Cephalic lateral line scale counts: preopercular 3; subopercular 6-7; dorsolateral branch of subopercular 3-4; supraorbital 9. Lateral line scale counts on body 9-10; tail 11-13. Fins weak; anal relatively long, reaching base of caudal (Ref. 40825).

Dorsal soft rays (total): 6; Analsoft rays: 4; Vertebrae: 18

Minimum depth from Ref. 58018.

分布於西太平洋區海域，包括臺灣、菲律賓、印尼及澳洲西北部等。臺灣分布於東沙地區。

不具經濟價值。偶被研究船捕獲，具有研究價值。

背鰭鰭條5；胸鰭鰭條15；臀鰭鰭條4。頭部略呈箱型；體盤卵圓形；尾部細長。喙為一薄板，向前延伸超過口。吻槽深凹，開口為三角形。餌球具有相當多細絲。眼小，眼間距寬；體長為眼徑之7.6-7.9倍，為眼間距之4.5-4.9倍。腹部光滑，完全不具棘。皮膚接近透明，相當鬆軟。表皮覆蓋單一棘狀結節(tubercle)。下鰓蓋結節不發達。側線鱗發達，肛門兩側具有3-4特化鱗片。體色淡黃色，所有鰭淡色。腹膜黑色。最大體長達80 mm SL。

深海底棲性。不具游泳能力，僅以特化之胸鰭及腹鰭在海底爬行，可能可以藉由鰓孔產生噴射能力前進。以小型無脊椎動物為食。母魚通常產下筏狀卵塊，內具有相當多的卵粒。

Halieutopsis simula, also known as fluffy-esca deepsea batfish, is a species of fish in the family Ogcocephalidae.

It is found in the Western Pacific Ocean.