分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cichliformes (Cichlids, convict blennies)
鱸形目 (Cichlids, convict blennies) >
Cichlidae (Cichlids)
慈鯛科魚類 (Cichlids) > Pseudocrenilabrinae
Etymology: Pelvicachromis: Latin, pelvica, -ae = bassin + Greek, chromis = a fish, perhaps a perch (Ref. 45335).
More on author: Boulenger.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的; pH range: 6.0 - 8.0; dH range: 5 - 12. 熱帶; 22°C - 25°C (Ref. 1672); 10°N - 0°N
Africa: from east Benin to Nigeria, restricted to freshwater parts of regions near the coast (Ref. 97630), including the Niger delta (Ref. 53405). Reports from Cameroon and Bioko (Ref. 81260) belong to Pelvicachromis kribensis (Ref. 97630).
非洲: 奈及利亞下游與喀麥隆下游。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 7.1 cm SL 雄魚/尚未辨別雌雄; (Ref. 81260)
背棘 (總數) : 17 - 18; 背的軟條 (總數) : 7 - 9; 臀棘: 3; 臀鰭軟條: 7 - 8. Diagnosis: A moderately gracile species, with rounded head and well-developed sexual dimorphism and dichromatism (Ref. 97630). It differs from all congeners by a coloration in male caudal fin with a white to yellow upper half of this fin, having a number of black dots in the dorsal half, without any margin, and a black margin with a white to pale bluish submargin in the lower half of this fin, vs. no margin/submargin in lower half of this fin in all congeners with exception of Pelvicachromis drachenfelsi and a white margin and black submargin in upper half of caudal fin in P. drachenfelsi (Ref. 97630). Females differ from females of P. drachenfelsi and P. kribensis in having two or three horizontal dark bars in the caudal fin, vs. none in P. drachenfelsi and one in some populations of P. kribensis (Ref. 97630). It differs from P. drachenfelsi in a caudal peduncle shorter then deep, vs. usually longer then deep; it differs from P. humilis, P. rubrolabiatus and P. signatus in absence of seven-eight dark, vertical bars on bodyand in three tubular infraorbital bones vs. two; it differs from P. silviae in lesser body depth, 29.9-36.4% of standard length vs. 37.4-43.0%, shorter preanal distance, 62.8-66.7% of standard length vs. 66.2-69.8%, shorter prepelvic distance, 36.0-37.5% of standard length vs. 36.9-39.8%, and more spines in dorsal fin, 17-18 vs. 14-16; it differs from P. subocellatus in lesser body depth in males in lappet-like elongation of some rays of caudal fin vs. no such elongation; it differs from P. roloffi in greater caudal peduncle length, 12.4-14.1% of standard length vs. 9.4-12.2%, and more pored scales of lateral-line, 26-28 vs. 24-26; it differs from P. sacrimontis in shorter interorbital distance, 21.4-26.8% of head length vs. 29.4-45.3%; it differs from P. pulcher in shorter preorbital distance, 18.6-21.2% of head length vs. 21.0-33.8%, and in rows of dots in the central field and lower part of the male caudal fin, vs. absence (Ref. 97630).
Cave-spawning, substrate brooder (Ref. 81260). Aquarium keeping: in pairs; minimum aquarium size 80 cm (Ref. 51539).
最大的 SL 在 5.5 公分被記錄。 (參考文獻 7378) 水族館保持: 成對; 水族館最小體型 80 公分.(參考文獻 51539)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Spawns in caves. Eggs may be deposited in niches and crevices as well as below roots, pieces of bark and larger leaves (Ref. 89992). 非洲: 奈及利亞下游與喀麥隆下游。
Daget, J., 1991. Pelvicachromis. p. 363-366. In J. Daget, J.-P. Gosse, G.G. Teugels and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 4. (Ref. 5677)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
無危 (LC) ; Date assessed: 22 April 2019
人類使用
漁業: 商業性; 水族館: 商業性
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01445 (0.00674 - 0.03099), b=2.99 (2.82 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (tm<1).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
