Barathronus diaphanus Brauer 1906
- Dataset
- Revision of the circumglobal genus Barathronus (Ophidiiformes, Bythitidae) with a new species from the eastern North Atlantic Ocean
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Chordata
- class
- Actinopterygii
- order
- Ophidiiformes
- family
- Aphyonidae
- genus
- Barathronus
- species
- Barathronus diaphanus
description
Description. For a detailed description see Nielsen (1969: 44). The principal meristic and morphometric characters are shown in Table 1. Comparisons. For a comparison to the very similar species, B. bicolor, see page 6.
diagnosis
Diagnosis. Barathronus diaphanus differs from the other five species of the genus with dark-pigmented peritoneum by the following combination of characters: dorsal-fin rays 58 – 73, anal-fin rays 48 – 61, long rakers on anterior gill arch 25 – 35, precaudal vertebrae 30 – 35, total vertebrae 66 – 75, vomer with 1 – 5 fangs, paired bulbs at basis of penis not developed, no ventral flexure of anteriormost vertebrae. Ripe males with rather thick penis. Newly-caught specimens bright red, preserved specimens light-brownish with dark-blue peritoneum. Otolith (Fig. 11) similar to that of B. bicolor (Fig. 8).
distribution
Distribution (Fig. 2). From Madagascar to Japan and Tonga ls. at depths of 579 – 2030 m.
materials_examined
Material examined (24 specimens, SL 54 - 130 mm). Holotype: ZMB 17699 (SL 117, female), off Somalia, 2 ° 58.8 ’ N, 47 ° 6.1 ’ E, RV Valdivia, st. 259, trawl, 1289 m, 28 Mar. 1899. Non-types: ZMA 104.467 (SL 59 mm, female), off Timor, 10 ° 48.6 ’ S, 123 ° 23.1 ’ E, RV Siboga, st. 300, trawl, 918 m, 30 Jan. 1900. ZSI 1050 / 1 (SL 65 and 70 mm, 2 females), Andaman Sea, 13 ° 29 ’ 30 ’’ N, 95 ° 29 ’ E, RV Investigator, St. 310, Agassiz trawl, 1756 m, 5 Nov. 1902. HKFRS- uncatalogued (SL 92 mm, male), South China Sea, 19 ° 40 ’ N, 115 ° 30 ’ E, RV Cape St. Mary, cr. 1 / 64, st. 26, Agassiz trawl, 732 – 796 m, 7 Jan. 1964. MNHN 2019 - 0035 (SL 113 mm, female), off Northwest Madagascar, 12 ° 27 ’ S, 48 ° 10 ’ E, RV Vauban, trawl 22, 680 – 700 m, 19 Jan. 1972. MNHN 2019 — 0031 - 34 (4 spms., SL 100 – 110 mm, 4 females), off Southeast Madagascar, 22 ° 16.9 ’ S, 42 ° 56 ’ E, RV Vauban, Crosnier coll., trawl 109, 1500 m, 30 Nov. 1973. MNHN 2019 - 0036 (SL 115 mm, male), off Northwest Madagascar, 13 ° 04 ’ S, 47 ° 51.5 ’ E, RV Vauban, trawl 134, 1865 – 2030 m, 21 Jan. 1975. MNHN 2002 - 3134 (SL 85 mm, male), Coral Sea, 19 ° 54 ’ S, 158 ° 37 ’ 58.8 ’’ E, RV Coriolis / Musorstom 5, dw 337, 412 – 430 m, 15 Oct. 1986. MNHN 1995 - 0913 (SL 95 mm, female), off Vanuatu, 18 ° 51 ’ S, 168 ° 55 ’ 1.2 ’’ E, RV Alis / Musorstom 8, cp 1007, 720 – 830 m, 25 Sep. 1994. MNHN 1995 - 0919 (SL 54 mm, male), off Vanuatu, 15 ° 48 ’ S, 167 ° 24 ’ E, RV Alis / Musorstom 8, cp 1074, 775 – 798 m, 4 Oct. 1994. MNHN 1995 - 0914 (SL 96 and 104 mm, 2 males), off Vanuatu, 14 ° 49 ’ 1.2 ’’ S, 167 ° 15 ’ E, RV Alis / Musorstom 8, cp 1110, 1360 m, 8 Oct. 1994. MNHN 2004 - 0924 (SL 72 mm, female), off Fiji Is., 17 ° 09 ’ S, 177 ° 55 ’ 58.8 ’’ E, RV Alis / Musorstom 10, cp 1331, 694 – 703 m, 8 Aug. 1998. MNHN 2004 - 0925 (SL 88 mm, male), off Fiji Is., 17 ° 03 ’ S, 177 ° 46 ’ 58.8 ’’ E, RV Alis / Musorstom 10, cp 1335, 729 – 753 m, 9 Aug. 1998. MNHN 2015 - 0052 (SL 112 mm, male), Tonga, 23 ° 28 ’ S, 176 ° 22 ’ W, RV Alis / Bordau 2, st. cp 1625, 824 m, 19 June 2001. MNHN 2006 - 0699 (SL 65 mm, male), Solomon Isls., 9 ° 0 ’ 21.6 ’’ S, 159 ° 4 ’ 15.6 ’’ E, RV Alis / Salomon 2, cp 2175, 579 – 585 m, 21 Oct. 2004. ZMUC P 771585 (SL 96 mm, female), Solomon Sea, 13 ° 45 ’ S, 156 ° 41 ’ E, RV Galathea 3, st. 0611219 - 05, otter trawl, 2255 – 2283 m, 19 Dec. 2006, ZMUC P 771586 (SL 112 mm, female), Solomon Sea, 7 ° 25 ’ S, 155 ° 44.7 ’ E, RV Galathea 3, st. 061227 - 01, 1.2 m Agassiz trawl, 1012 – 1094 m, 27 Dec. 2006. NSMT-P 111903 (SL 130 mm, female), Ryukyu Is., 25 ° 19.992 ’ N, 125 ° 24.912 ’ E to 25 ° 20.354 ’ N, 125 ° 26.659 ’ E, RV Tansei-maru, beam trawl, 1927 – 1901 m, 30 Nov. 2012. MNHN 2016 - 0166 (SL 110 + mm, female), Mahajanga, Madagascar, 15 ° 31 ’ S, 45 ° 42 ’ E, MOZ 1 _ CP 4, beam trawl, 806 m, 9 Oct. 2014.
Name
- Homonyms
- Barathronus diaphanus Brauer 1906