分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Perciformes/Serranoidei (Groupers) >
Anthiadidae (Fairy basslets or Streamer basses)
Etymology: Choranthias: Name from Greek 'chora' for room or space and 'anthias' meaning a seafish; an allusion to the interruption of the lateral line in the species of this genus.
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋 居于水底的; 深度上下限 30 - 55 m (Ref. 58184). 熱帶
Eastern Central Atlantic: endemic to St. Paul's Rocks.
中東大西洋: 聖保羅岩礁.(13121)
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 6.1 cm SL 雄鱼/尚未辨别雌雄; (Ref. 13121)
简单描述
检索表 | 型态特徵 | 形态测量图
背棘 (总数) : 10; 背的软条 (总数) : 15; 臀棘: 3; 臀鳍软条: 7. This species distinguished from it congeners by the following set of characters: A 7; 46-51 lateral-line scales; total gill rakers on first arch 32-35 (Ref. 90266).
This species, which was seen again at St. Paul's Rocks after almost 30 years of its first description, was observed between 35 and 55 m and was most abundant between 40 and 45 m on almost-vertical rock drop offs. It aggregates in small groups of 5 to 10 individuals, swimming close to crevices into which they hide when threatened. Several such groups were observed, with each group taking refuge in its own crevice when approached by a diver. Apparently, there is no exchange of individuals between groups or crevices, suggesting that appropriate shelter is one of the factors limiting the distribution of this species. Individuals were observed to leave a shelter only when a school of juvenile Chromis multilineata (Guichenot, 1853) approached the cliffs. Both species are quite similar in shape and, at depths with available light, are almost identical in coloration (faded-brown). Presumably, A. salmopunctatus gets protective advantages of schooling with a similar species in larger, multispecific groups while foraging on open water plankton. Although neither A. salmopunctatus nor other endemic fishes in the area may be under great risk of extinction (as their habitat is not directly affected by human activities), such extreme restricted geographic distribution is sufficient to consider the species threatened, as they could be vulnerable to natural impacts. A. salmopunctatus and Prognathodes obliquus have been reported show low densities and seem to have low absolute numbers. The latter may be a bias due to the fact that only the shallow portion of the depth range is being sampled or, alternatively, the species really have low population densities. A precise evaluation of the risks of extinction urgently requires extensive work to better estimate the distribution and population size of this species (Ref. 58184).
在 30 公尺之下的常见于岩石面。 形成小的浅滩。
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
中東大西洋: 聖保羅岩礁.(13121)
Lubbock, R. and A. Edwards, 1981. The fishes of Saint Paul's Rocks. J. Fish Biol. 18(2):135-157. (Ref. 13121)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)
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Estimates based on models
Preferred temperature (Ref.
123201): 26.3 - 27.3, mean 27.3 °C (based on 3 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01349 (0.00618 - 0.02945), b=3.00 (2.81 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
