Asterorhombus intermedius ( Bleeker, 1865 )

Amaoka, Kunio & Ho, Hsuan-Ching, 2019, The lefteye flounder family Bothidae (Order Pleuronectiformes) of Taiwan, Zootaxa 4702 (1), pp. 155-215 : 167-168

publication ID

https://doi.org/ 10.11646/zootaxa.4702.1.18

publication LSID

lsid:zoobank.org:pub:9108DB7D-3722-4F5C-BD76-F387E813BECB

persistent identifier

https://treatment.plazi.org/id/194987B1-5D70-FD69-DA8B-9629869FFABE

treatment provided by

Plazi

scientific name

Asterorhombus intermedius ( Bleeker, 1865 )
status

 

Asterorhombus intermedius ( Bleeker, 1865) View in CoL

Intermediate flounder; ÑƖ¥6ľ

Figures 2 View FIGURE 2 C–D; Table 3 View TABLE 3

Platophrys (Arnoglossus) intermedius Bleeker, 1865:47 (Type locality: Surawesi, Celebes, Indonesia).

Asterorhombus intermedius: Amaoka, 1969:111 View in CoL ; Lin et al., 1995:27; Shen & Wu, 2012:748.

Specimens examined. ASIZP 57100 View Materials (1, 87.7), Dawulun, Keelung, northern Taiwan, 28 Apr. 1993 . Other localities: BSKU 8376 View Materials (1 male, 122.0), Mimase , Kochi Prefecture, Japan, 1 Jul. , 1958; FAKU 17541 View Materials (1 female, 103.5), Miya, Aichi Prefecture, Japan, 15 Mar. 1952 ; HUMZ 124783 View Materials (1 female, 108.8), Belep Island , New Caledonia, 24 Oct. 1989 ; HUMZ 142681–142682 View Materials and MNHN 1995- 1174 About MNHN 1177 About MNHN (3 males, 3 females, 54.8–101.7), Bellona Plateau , Coral Sea, 25 Jul. 1984 ; MNHN 1995-1178 About MNHN (1 female, 119.1), Fairway Ridge , Coral Sea, 15 Jul. 1984 ; MNHN 1995-1179 About MNHN (1 female, 97.8), Belep Island , New Caledonia, 2 Jul. 1986 ; MNHN 1995-1180 About MNHN (1 male, 76.8), New Caledonia, 20 Aug. 1985 l; MNHN 1995-1181 About MNHN (1 female, 98.4), Chesterfield Plateau , Coral Sea, 24 Jul. 1988 ; HUMZ 142683–142684 View Materials and MNHN 1995-1185 About MNHN (1 male, 2 females, 81.2–98.6), Chesterfield Plateau , 24 Jul. 1988 ; MNHN 1995-1186 About MNHN (male, 95.0), Bellona Plateau , 22 Aug. 1988 ; MNHN 1995-1187 About MNHN (1 male, 78.8), Chesterfield Plateau , 28 Jul. 1988 ; MNHN 1995-1188 About MNHN (1 male, 91.7), New Caledonia, 22 Apr. 1988 ; MNHN 1995-1189 About MNHN (1 female, 50.3), Chesterfield Plateau , 17 July 1984 ; MNHN 1995-1190 About MNHN (1 female, 90.2), Chesterfield Plateau , 28 Jul. 1988 ; MNHN 1995-1191 About MNHN (1 male, 57.6), Bellona Plateau , 24 Jul. 1984 ; MNHN 1995-1192 About MNHN (1 male, 72.7), Chesterfield Plateau. , 18 Jul. 1984 ; HUMZ 142685 View Materials , MNHN 1995-1193 About MNHN , (1 male, 1 female, 47.0–82.5), Nereus Reef , 68–75 m, 22 Jul. 1988 ; HUMZ 142686 View Materials , MNHN 1995-1194 About MNHN (2 males, 43.0–65.1), New Caledonia, 23 Aug. 1984 ; MNHN 1995-1195 About MNHN (1 female, 53.5), New Caledonia, 20 Aug. 1984 ; MNHN 1995-1196 About MNHN (1 male, 50.5), New Caledonia, 21 Aug. 1984 .

Diagnostic features. D 83 (80–85, from other localities); A 63 (58–65); P 10 (10–12); C 2+13+2=17(1– 3+11+15+21–2=17); LLs 55 (50–57); GR 0+8 (0+8–11); vert. 10+28=38 (10+26–28=36–38).

Body ovate, greatest depth at middle part of body 44.7 (41.3–50.8)% SL. Head much longer than half of body depth 24.7 (26.2–29.7)% SL; upper profile of head with slight concavity in front of lower margin of upper eye; head profile moderately steep. Snout round and mounded, snout length about 1.5 times of eye diameter. Eyes small, separated by deep and narrow space; interorbital width about 1/3 of eye diameter.

Mouth large, curved; upper-jaw length 9.6 (10.7–12.9)% SL; maxilla extending to or slightly beyond anterior margin of lower eye. Teeth on both jaws uniserial, upper-jaw teeth small, somewhat enlarged anteriorly; teeth on lower jaw slightly larger than lateral teeth on upper jaw. Gill rakers only on lower limb, short and palmate with 5–8 spines.

Scales on ocular side rather small, ctenoid with short ctenii; cycloid scales on blind side; snout, both jaws and interorbital area scale-less. First dorsal-fin ray elongate 16.3 (8.4–19.5)% SL, and separated from remaining rays; pectoral fin short on ocular side 15.4 (13.0–17.8)% SL.

Coloration. Ocular side of body uniformly dark brownish, 2–3 dark (blue in fresh specimens) blotches, larger than eye, along dorsal and ventral edges of body, obtuse blotches on lateral line, and many scattered small blotches on head and body. All fins with many dark small blotches and spots except for pectoral fin; blind side of body uniformly whitish.

Size. Reaching 87.7 mm SL in Taiwan; up to 150 mm total length ( Hensley & Amaoka, 2001).

Distribution. Northern Taiwan and an underwater photograph taken from around Orchid Island, southern Taiwan; widespread in the Western Indian and Western Pacific oceans ( Amaoka, 2016).

Remarks. Asterorhombus intermedius resembles A. filifer in the coloration of the body and body form, but it differs from A. filifer in having a short first dorsal-fin ray, a rough edge of the fin membrane of the first dorsal-fin ray and few scales along the lateral line ( Hensley, 2005). Asterorhombus filifer is not reported from Taiwanese waters.

Kingdom

Animalia

Phylum

Chordata

Class

Actinopterygii

Order

Pleuronectiformes

Family

Bothidae

Genus

Asterorhombus

Loc

Asterorhombus intermedius ( Bleeker, 1865 )

Amaoka, Kunio & Ho, Hsuan-Ching 2019
2019
Loc

Asterorhombus intermedius

: Amaoka 1969: 111
1969
Loc

Platophrys (Arnoglossus) intermedius

Bleeker 1865: 47
1865
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