分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Ovalentaria/misc (Various families in series Ovalentaria)
鱸形目 (Various families in series Ovalentaria) >
Pomacentridae (Damselfishes)
雀鯛科 (Damselfishes) > Chrominae
Etymology: Chromis: Greek, chromis = a fish, perhaps a perch (Ref. 45335); xouthos: Name from Greek 'xouthos' meaning yellowish-brown; refers to the overall coloration.
Environment: milieu / climate zone / 深度上下限 / distribution range
生態學
海洋 礁區魚類; 深度上下限 12 - 50 m (Ref. 90102).
Indian Ocean: Maldive Islands and Chagos Archipelago to off the Andaman Sea coast of Thailand; and Indonesia; probably Andaman and Nicobar Islands, and Mergui Archipelago, off Myanmar.
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大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 9.2 cm SL 雄魚/尚未辨別雌雄; (Ref. 75747)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 13; 背的軟條 (總數) : 12; 臀棘: 2; 臀鰭軟條: 11 - 12; 脊椎骨: 26. This species is distinguished by the following characters: DXIII,12; A II,11 (rarely 12); pectoral rays 19 (rarely 18); spiniform caudal rays 3; tubed lateral line scales 16-17; gill rakers 6-7 + 19-21 (total, 26-28); body depth 1.9-2.0 in SL; colour when alive is mainly golden brown with yellowish caudal fin and pale bluish-grey pelvic fins (Ref. 75747).
Body shape (shape guide): short and / or deep; Cross section: compressed.
This species is usually encountered in clear water over coral reefs at depths between about 12 and at least 45 m. Habitats include both gradually sloping bottoms and steeper drop-offs, but in the former case it was restricted to depths greater than 20 m in the vicinity of isolated, small patch reefs. Generally, this species forms aggregations ranging from just a few fish to at least 20-30 individuals, feeding on plankton up to several meters above the bottom. The fish retreat to caves, crevices, and ledges when approached closely by divers (Ref. 75747). Life history characteristics for the family specify that this species is oviparous, with distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).
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Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Life history characteristics for the family specify that this group is oviparous, with distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).
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Allen, G.R. and M.V. Erdmann, 2005. Chromis xouthos, a new species of damselfish (Pomacentridae) from the East Andaman Sea and Central Indian Ocean. aqua, J. Ichthyol. Aquat. Biol. 10(3):89-94. (Ref. 75747)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
對人類具威脅
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Estimates based on models
Preferred temperature (參考文獻
123201): 27.8 - 29, mean 28.4 °C (based on 30 cells).
Phylogenetic diversity index (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01820 (0.00804 - 0.04119), b=2.99 (2.81 - 3.17), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 3.0 ±0.1 se; based on size and trophs of closest relatives
回復力 (參考文獻
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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