分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cichliformes (Cichlids, convict blennies)
鱸形目 (Cichlids, convict blennies) >
Cichlidae (Cichlids)
麗魚科 (Cichlids) > Incertae sedis
Etymology: Divandu: Vernacular name used in Mayombe, Congo; albimarginatus: From the white margin on the lower edge of the caudal fin in preserved specimens; an adjective.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 大洋性. 熱帶
Africa: Kouilou-Niari and Loeme-Loukene basins(Republic of Congo), Nyanga and upper Ngounie basins and the Ogowe River (Gabon) (Ref. 81260).
非洲: 剛果與加彭。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 12.1 cm SL 雄鱼/尚未辨别雌雄; (Ref. 81260)
背棘 (总数) : 13 - 16; 背的软条 (总数) : 9 - 12; 臀棘: 3; 臀鳍软条: 7 - 8; 脊椎骨: 24 - 25. Diagnosis: relatively deep-bodied (Ref. 52307, 81260), particularly so in large specimens (depth 27.8-40.2% SL)(Ref. 8160). Head short (HL 31.9-37.2% SL); snout generally shorter than postorbital length; ascending process of premaxilla about one third longer than dentigerous arm; outer and inner row teeth in oral jaws unicuspid (Ref. 81260). Laterosensory system in the lachrymal bone with 5 openings (Ref. 45129, 52307, 81260). Infraorbital series complete (lachrymal bone and 4 other)(Ref. 45129, 81260). First pelvic fin ray longest in adults of both sexes (Ref. 45129), usually reaching anus or beyond (Ref. 81260). Pectoral fin somewhat shorter than pelvic; some dorsal and anal rays produced (branched dorsal rays 4-6, branched anal rays 4-5 longest), upper and lower caudal rays also produced in both sexes; caudal peduncle somewhat deeper than long (Ref. 81260). 2.3-3 scales between highest point of upper lateral line (about the 8-9th pored scale) and dorsal fin base; between the last 2-4 pored scale and the dorsal fin base 1 or 1 large and 1 very small scale (Ref. 45129). 12 circumpeduncular scales (Ref. 45129, 81260). Chest scales markedly smaller than flank scales (Ref. 81260). No sexual dimorphism in morphology or coloration (Ref. 45129).
Coloration: base body colour pale brown, cheeks and ventrum somewhat paler; usually 6-7 vertical bars on flanks; opercular spot well marked; reddish black maculae on caudal, soft dorsal and anal fins, often forming distinct bands proximally on the fins (Ref. 81260). Dorsal, anal and pelvic fins (Ref. 81260), and upper (Ref. 52307, 81260) and lower (Ref. 52307) edge of caudal fin, with narrow red margin (Ref. 52307, 81260), caudal fin also with thin white submargin (Ref. 52307). Lower edge of caudal with white margin; metallic (silvery) flush below red margin on soft dorsal fin (Ref. 81260).
泪骨 5个开口的后感觉系统。 眶下的系列完成。 (泪骨与 4 另外地) 第一个腹鳍鳍条长的当成鱼时两性。 在上面侧线 (8- 第 9 有孔的鳞片了大约) 与背鳍基底 2.5-3 的最高点之间的鳞片; 在最后的 2-4 之间有孔的鳞片与背鳍基底 1 或 1 大的与 1个最小鳞片。 Circumpeduncular 鳞片 12. 没有性的同种二形观察。
Inhabits the middle and lower parts of the river basins; collection sites are in regions with primary or secondary forests. The water is clear with transparency of more than 100 cm, acidity approximately neutral (pH 7-7.5) with low conductivity (50 µS) and temperatures 21-22°C. The species lives syntopically with Chromidotilapia mamonekenei, which is more abundant than D. albimarginatus (Ref. 45129). Feeds on small particles (both animal- and plantbased), detritus and aufwuchs (Ref. 52307). Polygamous, ovophilic, female mouthbrooder (Ref. 81260). Possibly larvophilic (Ref. 52307).
栖息于河流域的中下游的部份; 采集点是在具有初期的或次级森林。 水用低的导电率 (50 μ S) 与温度 21-22 ° C. 大约对超过 100 公分的透明酸度感到清澈中性 (酸硷度 7-7.5) 此鱼种生命与 Chromidotilapia mamonekenei 有邻接关系, 是比 D. albimarginatus 更丰富.(参考文献 45129)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
非洲: 剛果與加彭。
Lamboj, A. and J. Snoeks, 2000. Divandu albimarginatus, a new genus and species of cichlid (Teleostei: Cichlidae) from Congo and Gabon, Central Africa. Ichthyol. Explor. Freshwat. 11(4):355-360. (Ref. 45129)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.3 ±0.5 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).
