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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.
Môi trường: môi trường / vùng khí hậu / Mức độ sâu / phạm vi phân phối
Sinh thái học
biển gần đáy; mức độ sâu 30 - 55 m (Ref. 58184). Tropical
Eastern Central Atlantic: endemic to St. Paul's Rocks.
Bộ gần gũi / Khối lượng (Trọng lượng) / Tuổi
Chín muồi sinh dục: Lm ?  range ? - ? cm
Max length : 6.1 cm SL con đực/không giới tính; (Ref. 13121)
Mô tả ngắn gọn
Khóa để định loại | Hình thái học | Sinh trắc học
Các tia vây lưng cứng (tổng cộng) : 10; Các vây lưng mềm (tổng cộng) : 15; Tia cứng vây hậu môn: 3; Tia mềm vây hậu môn: 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).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
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).
Vòng đời và hành vi giao phối
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng
Lubbock, R. and A. Edwards, 1981. The fishes of Saint Paul's Rocks. J. Fish Biol. 18(2):135-157. (Ref. 13121)
Tình trạng Sách đỏ IUCN (Ref. 130435: Version 2025-2 (Global))
Mối đe dọa đối với con người
Harmless
Sử dụng của con người
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Ước tính dựa trên mô hình
Chỉ số đa dạng phát sinh loài (Tài liệu tham khảo 82804) |
PD50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01413 (0.00627 - 0.03183), b=3.00 (2.80 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Mức dinh dưỡng (Tài liệu tham khảo 69278) |
3.3 ±0.4 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 (12 of 100). 🛈 |