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Kurtiformes (Nurseryfishes, cardinalfishes.) >
Apogonidae (Cardinalfishes) > Apogoninae
Etymology: Xeniamia: Name from Greek 'Xenos' meaning stranger and 'Amia' referring to a type of fish, often used with
cardinalfish names, treated as feminine noun; atrithorax: Name from Latin 'ater, atra, atrum' meaning black and Greek 'thorax' a masculine noun meaning breastplate, referring to the position of numerous melanophores as a dark spot in advanced of the pelvic-fin base; noun in apposition.
Môi trường: môi trường / vùng khí hậu / Mức độ sâu / phạm vi phân phối
Sinh thái học
biển cùng sống ở rạn san hô; mức độ sâu 40 - 119 m (Ref. 110227), usually 70 - 119 m (Ref. 110227). Tropical
Western Pacific: South China Sea off Khanh Hoa Province, Vietnam.
Bộ gần gũi / Khối lượng (Trọng lượng) / Tuổi
Chín muồi sinh dục: Lm ?  range ? - ? cm
Max length : 3.0 cm SL (female)
Mô tả ngắn gọn
Khóa để định loại | Hình thái học | Sinh trắc học
Các tia vây lưng cứng (tổng cộng) : 9; Các vây lưng mềm (tổng cộng) : 9; Tia cứng vây hậu môn: 2; Tia mềm vây hậu môn: 8; Động vật có xương sống: 24. This miniature species (less than 3.0 cm SL) is distinguished by the following characters: with a large melanophore patch anterior to insertion of pelvic fin, extending forward on each side of isthmus, progressively thinning out; black stomach, anterior intestine pale with black spots black intestine from second bend; interior of lower gill chamber blackish with concentrated melanophores extending forward to dorsal part of isthmus; D VIII-I,9 with eighth dorsal spine visible, fourth dorsal spine longer than third; A II,8; first gill arch with 9 gill rakers (Ref. 110227).
Cross section: compressed.
This species has been taken in shrimp trawls on muddy bottom. Most specimens were collected from 70-119 m, some from 40-60 m, in the main waterway of the Bay of Nha Trang (latter samples might have been pumped through canyons cutting out the outer shelf as proposed for
other fish taxa collected from the unusually shallow depths in this area (Ref. 84063). No specimens or fragments of sea urchins commonly trawled together with Siphamia specimens. Year-to-year fluctuations in density of population were observed with this species present at 18 of 22 stations trawling eastward and southward of Pyramid Island in 2005 and 2007 and two of 17 stations sampled in 2006 and 2009-2012. All samples were made between April and July, and no specimens were collected during a winter monsoon season (October-January). It always appeared in groups of about 10-60 specimens per trawl, with many specimens having ripe ova or brooding eggs. The smallest, 1.45 cm SL was immature. The males with buccal enlargement suggestive of brooding eggs were 2.2-2.4 cm SL and showed loss of teeth on the vomer and palatines. A 2.3 cm SL male had approximately 280 orangish eggs, 0.5 mm in diameter. Females with developed ova were as small as 2.3 cm SL. The largest gravid female was 2.95 cm SL. No possible indications for commensal relationships of this species were present (Ref. 110227).
Vòng đời và hành vi giao phối
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng
Fraser, T.H. and A.M. Prokofiev, 2016. A new genus and species of cardinalfish (Percomorpha, Apogonidae, Sphaeramiini) from the coastal waters of Vietnam: luminescent or not? Zootaxa 4144(2):227-242. (Ref. 110227)
Tình trạng Sách đỏ IUCN (Ref. 130435: Version 2025-2 (Global))
Mối đe dọa đối với con người
Harmless
Sử dụng của con người
Các nghề cá: bycatch
Các công cụ
Báo cáo đặc biệt
Tải xuống XML
Các nguồn internet
Ước tính dựa trên mô hình
Chỉ số đa dạng phát sinh loài (Tài liệu tham khảo
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01514 (0.00700 - 0.03275), b=3.07 (2.89 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Mức dinh dưỡng (Tài liệu tham khảo
69278): 3.2 ±0.5 se; based on size and trophs of closest relatives
Thích nghi nhanh (Tài liệu tham khảo
120179): Chiêù cao, thời gian nhân đôi của chủng quần tối thiểu là dưới 15 tháng (Preliminary K or Fecundity.).
Sự dễ bị tổn thương của nghề đánh cá (Ref.
59153): Low vulnerability (10 of 100).
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