>
Cichliformes (Cichlids, convict blennies) >
Cichlidae (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
ນິເວດວິທະຍາ
; ນ້ຳຈືດ ກ່ຽວກັບ (ຢູ່) ໄກ້ໜ້ານ້ຳໃນທະເລເປີດ. Tropical
Africa: Kouilou-Niari and Loeme-Loukene basins(Republic of Congo), Nyanga and upper Ngounie basins and the Ogowe River (Gabon) (Ref. 81260).
ຂະໜາດ / ນ້ຳໜັກ / Age
Maturity: Lm ?  range ? - ? cm
Max length : 12.1 cm SL ຕົວຜູ້/ບໍ່ມີເພດ; (Ref. 81260)
ຄີ (ໜາມ)ແຂງຢູ່ຫຼັງປາ (ທັງໝົດ) : 13 - 16; ຄີຫຼັງຂອງປາ (ຄີອ່ອນ) (ທັງໝົດ) : 9 - 12; ຄີ(ໜາມ) ແຂງຢູ່ຄີກົ້ນປາ
ກຸ່ມປາກະດູກແຂງ
ຄວາມຖີ່ຂອງກຸ່ມຖ່າຍທອດພັນ
ປາທີ່ມີການເຄື່ອນຍ້າຍຈາກທະເລໄປຫານ້ຳຈືດ ແລະນ້ຳຈືດຫາທະເລ
ປາທີ່ມີການເຄື່ອນຍ້າຍຈາກທະເລແລະໄປໄຂ່ຢູ່ນ້ຳຈືດ
ຄີກົ້ນຂອງປາ
ສັດທີ່ມີກະດູກສັນຫັຼງ
ການຖ່າຍທອດທາງກຳມະພັນຈາກພໍ່ແມ່ຫາລູກ: 3; ຄີກົ້ນຂອງປາ: 7 - 8; ສັດທີ່ມີກະດູກສັນຫຼັງ: 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).
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).
Life cycle and mating behavior
ການຈະເລີນເຕັມໄວ | ການສືບພັນ | ການວາງໄຂ່ | ໄຂ່ | ຄວາມດົກຂອງໄຂ່ປາ | ຕົວອ່ອນ
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)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
ເຄື່ອງມື
Special reports
Download XML
ແຫຼ່ງອີນເຕີເນັດ
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).
ຊັ້ນເຂດຮ້ອນ (Ref.
69278): 3.3 ±0.5 se; based on size and trophs of closest relatives
ຄວາມຢືດຢຸ່ນ (Ref.
120179): ສູງ, ປະຊາກອນຕຳ່ສຸດທີ່ໃຊ້ເວລາສອງໜ້ອຍກວ່າ 15 ເດືອນ (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).