Lenguado pelicano
Chascanopsetta lugubris Alcock, 1894
También llamadaPelican flounder (eng) · Perpeire pelican (fra) · Perpeire pélican (fra) · Perpeire pélican, Rombou pélican (fra) · Rombou pélican (fra) · Sheer-sheerto (som) · Wayo (swa) · ปลาลิ้นควายทะเลลึก (tha) · ザラガレイ (jpn) · 半邊魚 (zho) · 大口長頜鮃 (zho) · 扁魚 (zho) · 比目魚 (zho) · 皇帝魚 (zho)
Descrita por primera vez en: Alcock, A. W. (1894). Natural history notes from H. M. Indian marine survey steamer `Investigator,', Commander C. F. Oldham, R. N., commanding. Series II., No. 11. An account of a recent collection of bathybial fishes from the Bay of Bengal and from the Laccadive Sea. <em>Journal of the Asiatic Society of Bengal.</em> v. 63 (pt 2): 115-137, Pls. 6-7. [Also as a separate, pp. 1-23, with original pagination at bottom.].
Chascanopsetta is a genus of flatfish in the family Bothidae (lefteye flounders) found in deeper parts of the Pacific and Indian Oceans with a single species, C. lugubris also occurring in the Atlantic Ocean. It contains ten member species.
Descripciones de listas y floras indexadas por GBIF
description
Diagnostic Features. D 115 – 124; A 78 – 86; P 14 – 17; C 2 + 13 + 2 = 17; LLs 157 – 197; GR 0 + 1 – 3 = 1 – 3; vert. 17 + 38 – 40 = 55 – 57. Body elongate elliptical, rather soft and flabby; greatest depth at posterior margin of abdominal cavity (24.9 – 30.5 % SL). Caudal peduncle narrow, its depth about 14 – 19 % of body depth. Head relatively large (19.8 – 22.7 % SL); upper profile of head with slight concavity anterior of dorsal margin of lower eye. Snout blunt and short, its length about 2 / 3 of eye diameter. Eyes separated by narrowly flat space, its width about 1 / 3 to 1 / 4 of eye diameter. Mouth very large, upper-jaw length 14.5 – 17.6 % SL; maxilla extending well beyond posterior margin of lower eye; tip of lower jaw reaching a little beyond tip of upper jaw. Teeth on both jaws uniserial, slender; upper-jaw teeth small on posterior half; lower-jaw teeth curved inward and depressible, posteriormost teeth smaller than others. Gill rakers on lower limb, rudimentary. Scales on both sides very small, cycloid. Anterior rays of dorsal fin somewhat elongated, free from fin membrane except for base. First ray of anal fin connected with last ray of pelvic fin by narrow membrane.
The lefteye flounder family Bothidae (Order Pleuronectiformes) of Taiwan
discussion
Remarks. This species had been regarded as two subspecies, C. lugubris lugubris from Pacific Ocean and C. lugubris danae from Atlantic Ocean (Amaoka & Yamamoto (1984). But Munroe (2003) graded up to species based on clearly different counts of the gill rakers. Recently Tongboonkua et al. (2018) showed generic divergence between C. lugubris and C. danae. We followed their results, though it may be problematic in identification of species. Caschanopsetta lugubris differs from C. prognatha in having the tip of the lower jaw slightly beyond the tip of the upper jaw and the lower-jaw length being shorter than HL (Amaoka, 2016).
The lefteye flounder family Bothidae (Order Pleuronectiformes) of Taiwan
distribution
Distribution. Widespread around Taiwan; Indian to Western Pacific oceans (Amaoka & Yamamoto, 1984).
The lefteye flounder family Bothidae (Order Pleuronectiformes) of Taiwan
De Wikipedia (CC BY-SA), citada sección por sección
Descripción
Members of this genus have an elongate body and a relatively large mouth, the latter giving rise to the common name pelican flounder (primarily used for P. lugubris). They lack rostral, orbital, or mandibular spines.
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