Diagnostic Description
provided by Fishbase
Highly variable in color and in appendages in relation to habitat. Covered with appendages on algae reefs, but plain when deep with sponges (Ref. 48635). Body highly compressed and covered with weed-like tassels (Ref. 37816).Description: Characterized by having strongly oblique and upturned mouth; concave snout; dorsal spines relatively soft and easily bendable with slight pressure; depth of body 2.1-2.4 in SL (Ref. 90102).
- Recorder
- Cristina V. Garilao
Morphology
provided by Fishbase
Dorsal spines (total): 12; Dorsal soft rays (total): 9; Analspines: 3; Analsoft rays: 5
- Recorder
- Cristina V. Garilao
Trophic Strategy
provided by Fishbase
Rare species. Found in rocky or coralline habitats near algae where it camouflages itself. Hunts prey at night like other species of scorpaenids, feeding on fish and small invertebrates.
- Recorder
- Drina Sta. Iglesia
Biology
provided by Fishbase
Found in rich soft-bottom habitats in current prone channels (Ref. 48635); also in rocky or coralline habitats near algae where it camouflages itself. Hunts prey at night like other species of scorpaenids, feeding on fish and small invertebrates. Solitary among corals, rocks and weeds (Ref 90102).
- Recorder
- Estelita Emily Capuli
Importance
provided by Fishbase
fisheries: of no interest; aquarium: commercial
- Recorder
- Estelita Emily Capuli
分布
provided by The Fish Database of Taiwan
分布於印度太平洋地區,西起東非及模里西斯島(Mauritius
Is.),東至日本及卡羅森群島。
利用
provided by The Fish Database of Taiwan
小型魚類,除學術研究外,不具經濟價值。
描述
provided by The Fish Database of Taiwan
體中長,側扁且高,背緣在頭後部明顯隆起。頭大,甚側扁。眼較小,上側位;眼眶略突出於頭背;口大,端位,斜裂,下頷略比下頷突出。鼻棘1個,但常消失;淚骨外側具輻射狀稜。第一與第二眶下骨具眶下稜,具3棘,第二眶下骨延伸至前鰓蓋骨上緣;無第三與第五眶下骨。淚骨具5輻射狀感覺孔管。前鰓蓋骨4棘;鰓蓋骨具2叉向稜,後端各具1弱刺。下鰓蓋骨及間鰓蓋骨無棘。顱骨棘發達。側篩骨光滑,具1短小眼前棘。額骨光滑,眶上稜高凸,具眼上棘與眼後棘各1個,眼上棘明顯,眼後棘寬大。無鼓棘。眼間無額稜及額棘。頂骨光滑,具頂稜與雞冠狀頸棘。眼前至側線前端具蝶耳棘2棘,微小;翼耳棘1個,較大;後顳顬棘上下各1個,上棘較小;肩胛棘1個,圓突;脈棘1個。前額骨高突而後部橫凹,眼間隔深凹,眼後方無頂枕窩,吻側在眼下緣至眶下稜具1寬大凹溝。吻端具1分枝小鬚,兩側各具1皮鬚;前鼻孔具1狹長皮瓣;眶前骨下緣具3皮瓣,後者長大;眼緣具數個短小皮突;眼上棘基部具1長分枝皮瓣;前鰓蓋骨邊緣具3皮鬚;下頷具3皮瓣;頰部、體側及鰭上皆布滿皮瓣。鱗小,圓鱗。頭部無鱗。胸部與尾鰭基部具細小鱗片。背鰭、臀鰭及腹鰭無鱗。側線上側位,前端斜直,後端平直,末端延伸至尾鰭基部。側線縱鱗列:65-75。背鰭長且大,起始於鰓孔上角上方,硬棘與鰭條有鰭膜相連,硬棘部鰭膜凹入而近基底,硬棘部的基底長於軟條部的基底,第6硬棘最長,具硬棘
XII,軟條
9;臀鰭起始於背鰭倒數第2硬棘下方,鰭長度較背鰭軟條短,鰭條後方延伸至背鰭前半部,具硬棘
III,軟條5;胸鰭寬大,下側位,無鰭條分離,長度超過臀鰭基部,軟條16;腹鰭延長且大,胸位,具硬棘
I,軟條5;尾鰭圓形。體色多變,通常為褐色、褐紅色、紫色及紅色,頭部與體側具有許多圓環狀紋路。(李承運、林沛立2012/11編寫)
棲地
provided by The Fish Database of Taiwan
本種主要棲息於珊瑚礁、岩礁或海藻茂盛之環境,水深10-297m。具偽裝能力,時常隱藏身體而不容易被發現,藉以守株待兔般快速捕捉過往之小魚與甲殼動物為食。背鰭鰭棘下具毒腺,是海中危險生物。
Rhinopias frondosa
provided by wikipedia EN
Rhinopias frondosa, the weedy scorpionfish or the weed fish, is a species of marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. This species is found in the Indo-West Pacific. It is a rare but highly desirable fish in the aquarium trade.
Taxonomy
Rhinopias frondosa was first formally described in 1892 by the German-born British zoologist Albert Günther with the type locality given as Mauritius.[3] When Theodore Gill described the new monotypic genus Rhinopias in 1905 he designated this species as its type species.[4] This species has been seen associating with R. eschmeyeri in pairs and it has been suggested that these are the different sexes in a sexually dimorphic single species.[5] The specific name frondosa means "branched or full of leaves", an allusion to the fleshy tentacles which cover most of the body of this fish.[6]
Description
Rhinopias frondosa has a highly compressed body which is covered in weed like tentacles. It has 12 spines and 9 soft rays in its dorsal fin and 3 spines and 5 soft rays in its anal fin.[2] The soft-rayed part of the dorsal fin has two small black spots that have a diameter smaller than that of the orbit. There are fleshy tentacles on the supraocular and posterior lacrimal spines. The distal margins of the soft-rayed parts of the dorsal, pelvic, anal and caudal fins have either no notches or they are rather weakly notched. The tip of each fin ray in the caudal fin is divided into four branches. The spines of the dorsal fin are relatively flexible and have tips which bend easily under even the slightest pressure. The lateral surface of the lacrimal bone is typically smooth or has a bump and the suborbital ridge normally has 3 bumps. There are between 9 and 24 tentacles on the lower jaw, there are tentacles below the eyes and the flanks are covered in tentacles. The fin membranes on the spiny part of the dorsal fin have clear incisions. The colour of this species is very variable but they all have distinctive markings of numerous distinct circular dark-margined spots with the spot in the middle being the same colour as the background colour.[7] This species attains a maximum known total length of 23 cm (9.1 in).[2]
Distribution
The weedy scorpionfish lives in the Indian Ocean and Western Pacific Ocean, from Japan to Australia and from South Africa to the Caroline Islands. They are found in depths ranging from 13 to 90 meters.[2]
Feeding and behaviour
Like most Scorpaenidae, weedy scorpionfish are mostly nocturnal ambush hunters, using their camouflage to prey on unsuspecting fish and invertebrates. They rarely swim, but rather move along the bottom propelling themselves with their fins.[8]
In aquarium
The weedy scorpionfish has no commercial value for fisheries, but commands a high price in the aquarium trade. Although they can be found in Eastern waters, they are mostly exported to the west where they fetch a high price due to the difficulty of identifying them in the wild and their issues with contracting diseases from live feeder options as it is extremely difficult to wean them onto prepared food. Rhinopias are highly sought after by aquarists who collect rare and unusual species. Newly introduced specimen have also been known to change colors if a group of rhinopias are already present in a different color.
References
-
^ Motomura, H.; Matsuura, K. (2016). "Rhinopias frondosa". IUCN Red List of Threatened Species. 2016: e.T69800391A69801052. doi:10.2305/IUCN.UK.2016-3.RLTS.T69800391A69801052.en. Retrieved 18 November 2021.
-
^ a b c d Froese, Rainer; Pauly, Daniel (eds.) (2021). "Rhinopias frondosa" in FishBase. August 2021 version.
-
^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Rhinopias". Catalog of Fishes. California Academy of Sciences. Retrieved 1 February 2022.
-
^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Scorpaenidae". Catalog of Fishes. California Academy of Sciences. Retrieved 1 February 2022.
-
^ "Rhinopias frondosa". Fishes of Australia. Museums Victoria. 2018. Retrieved 1 February 2022.
-
^ Christopher Scharpf & Kenneth J. Lazara, eds. (2 October 2021). "Order Perciformes (Part 9): Suborder Scorpaenoidei: Family Scorpaenidae". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 1 February 2022.
-
^ Motomura, Hiroyuki and Johnson, Jeff (2006). "Validity of the Poorly Known Scorpionfish, Rhinopias eschmeyeri, with Redescriptions of R. frondosa and R. aphanes (Scorpaeniformes: Scorpaenidae)". Copeia. 2006: 500–515. doi:10.1643/0045-8511(2006)2006[500:VOTPKS]2.0.CO;2.
-
^ Michael, Scott (May 2003). "Aquarium Fish: The Rhinopias Spp. – The Ultimate Scorpionfishes". advancedaquarist.com.
- license
- cc-by-sa-3.0
- copyright
- Wikipedia authors and editors
Rhinopias frondosa: Brief Summary
provided by wikipedia EN
Rhinopias frondosa, the weedy scorpionfish or the weed fish, is a species of marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. This species is found in the Indo-West Pacific. It is a rare but highly desirable fish in the aquarium trade.
- license
- cc-by-sa-3.0
- copyright
- Wikipedia authors and editors
Description
provided by World Register of Marine Species
Found in rocky or coralline habitats near algae where it camouflages itself, at depths from 13 to 90 m. Hunts prey at night like other species of scorpaenids, feeding on fish and small invertebrates. Venomous spines.
Froese, R. & D. Pauly (Editors). (2023). FishBase. World Wide Web electronic publication. version (02/2023).
- license
- cc-by-4.0
- copyright
- WoRMS Editorial Board