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Melanochromis robustus Johnson, 1985

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drawing shows typical species in Cichlidae.

Classification / Names ຊື່ສາມັນ | ຄຳສັບຄ້າຍຄືກັນ | Catalog of Fishes(ຕະກຸນ, ຊະນິດ) | ITIS | CoL | WoRMS | Cloffa

> Cichliformes (Cichlids, convict blennies) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Melanochromis: Greek, melas, melanos = black + Greek, chromis = a fish, perhaps a perch (Ref. 45335).

Environment: milieu / climate zone / depth range / distribution range ນິເວດວິທະຍາ

; ນ້ຳຈືດ ກ່ຽວກັບ (ຢູ່)ເທິງຊັ້ນພື້ນດິນໃນທະເລເປີດ; ລະດັບຄວາມເລິກ ? - 5 m (Ref. 89864). Tropical; 11°S - 13°S

ການແຜ່ກະຈາຍ ປະເທດ | ເຂດ FAO | ລະບົບນິເວດ | ການປະກົດຕົວ | Point map | ການແນະນຳ | Faunafri

Africa: endemic to Lake Malawi (Ref. 89864).

ຂະໜາດ / ນ້ຳໜັກ / Age

Maturity: Lm ?  range ? - ? cm
Max length : 12.4 cm SL ຕົວຜູ້/ບໍ່ມີເພດ; (Ref. 89864)

Short description ຕົວທີ່ໃຊ້ໃນການຈຳແນກຊະນິດ | ສະລີລະວິທະຍາ | ການວັດແທກຮູບຮ່າງລັກສະນະພາຍນອກຂອງດິນ,ສັດ,ປາ…

ຄີ (ໜາມ)ແຂງຢູ່ຫຼັງປາ (ທັງໝົດ) : 16 - 18; ຄີຫຼັງຂອງປາ (ຄີອ່ອນ) (ທັງໝົດ) : 8 - 10; ຄີ(ໜາມ) ແຂງຢູ່ຄີກົ້ນປາ ກຸ່ມປາກະດູກແຂງ ຄວາມຖີ່ຂອງກຸ່ມຖ່າຍທອດພັນ ປາທີ່ມີການເຄື່ອນຍ້າຍຈາກທະເລໄປຫານ້ຳຈືດ ແລະນ້ຳຈືດຫາທະເລ ປາທີ່ມີການເຄື່ອນຍ້າຍຈາກທະເລແລະໄປໄຂ່ຢູ່ນ້ຳຈືດ ຄີກົ້ນຂອງປາ ສັດທີ່ມີກະດູກສັນຫັຼງ ການຖ່າຍທອດທາງກຳມະພັນຈາກພໍ່ແມ່ຫາລູກ: 3; ຄີກົ້ນຂອງປາ: 6 - 8. Diagnosis: Melanochromis robustus has a basic melanin pattern consisting of two longitudinal black stripes on the body, of which the mid-lateral stripe reverses colour with the background in the breeding male, a character that makes it a member of Melanochromis (Ref. 89864). Female M. robustus are distinguished from all other congeners, except those of M. melanopterus, M. vermivorus, and M. mpoto, by a gray to brown coloured body, which is white to yellow in other congeners; mouthbrooding females may have additional vertical bars on the flanks, but these are more diffuse than the horizontal stripes (Ref. 89864). Both male and female M. robustus are distinguished from M. melanopterus, M. vermivorus, and M. mpoto by a broader interorbital breadth, the width of which is 26.1-29.6% of head length, vs. 16.6-20.6% in M. melanopterus, 18.5-25.5% in M. vermivorus, and 14.8-21.8% in M. mpoto (Ref. 89864). Male M. robustus in breeding colouration are distinguished from all other congeners by a dark-blue body colour and two light blue horizontal stripes on the flank superimposed with dark-blue to black vertical bars; the bars are interrupted by the light-coloured horizontal lines; none of the other known species of Melanochromis has a male colouration where the horizontal and vertical elements of the pattern are expressed simultaneously; superficially, breeding males of the sympatric and smaller M. heterochromis have a similar colouration, albeit lacking the vertical bars; Melanochromis heterochromis can also be distinguished by its light-coloured mid-lateral stripe, which rarely spans more than two scales but is usually three to four scales deep in M. robustus; Melanochromis robustus is further distinguished from M. heterochromis by a longer snout, 33.8-38.0% of head length vs. 26.8-31.5% in M. heterochromis, and by a deeper caudal peduncle, 12.9-14.4% of standard length vs. 9.8-11.7% in M. heterochromis (Ref. 89864).

ຊີວະສາດ     ຄຳແປສັບ (ຕ.ຢ. epibenthic)

Found in the very shallow, less than 5 m deep, rocky habitat at the islands of Chinyankwazi and Mumbo in Lake Malawi (Ref. 89864). It has an opportunistic feeding behaviour in which the species is attracted to visible particles floating in the water column rather than collecting food by systematically browsing from the rocky substrate (Ref. 89864). Males in breeding colouration energetically defend spawning sites, which are located inside caves and crevices between the rocks, against conspecific males; male territories have an estimated diameter of 2-3 meters (Ref. 89864). Mouthbrooding females remain solitary and stay close to the rocky substrate (Ref. 89864).

Life cycle and mating behavior ການຈະເລີນເຕັມໄວ | ການສືບພັນ | ການວາງໄຂ່ | ໄຂ່ | ຄວາມດົກຂອງໄຂ່ປາ | ຕົວອ່ອນ

Main reference Upload your references | ເອກະສານອ້າງອີງ | ຜູ້ປະສານງານ : Kullander, Sven O. | ຜູ້ຮ່ວມມື

Konings, A.F. and J.R. Stauffer Jr., 2012. Review of the Lake Malawi genus Melanochromis (Teleostei: Cichlidae) with a description of a new species. Zootaxa 3258:1-27. (Ref. 89864)

IUCN Red List Status (Ref. 130435: Version 2024-2)

  Near Threatened (NT) (B1a+2a); Date assessed: 09 June 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

ການປະມົງ: ທີ່ບໍ່ມີຄວາມສົນໃຈ
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ຂໍ້ມູນຕື່ມອີກ

Trophic ecology
ລາຍການອາຫານ
ອົງປະກອບຂອງອາຫານ
ການບໍລິໂພກອາຫານ
Food rations
ຜູ້ລ້າ
Population dynamics
ຕົວວັດແທກການເຕີບໃຫຍ່
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
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Life cycle
ການສືບພັນ
ການຈະເລີນເຕັມໄວ
Maturity/Gills rel.
ຄວາມດົກຂອງໄຂ່ປາ
ການວາງໄຂ່
Spawning aggregations
ໄຂ່
Egg development
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ການປ່ຽນແປງຂອງຕົວອ່ອນ
Anatomy
ເນື້ອທີ່ເຫືອກ
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Otolith
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Body composition
Nutrients
ການບໍລິໂພກອົກຊີເຈນ
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Diseases & Parasites
Toxicity (LC50s)
Genetics
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Stamps, coins, misc.
Taxonomy
ຊື່ສາມັນ
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ສະລີລະວິທະຍາ
ການວັດແທກຮູບຮ່າງລັກສະນະພາຍນອກຂອງດິນ,ສັດ,ປາ…
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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
ຊັ້ນເຂດຮ້ອນ (Ref. 69278):  3.4   ±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).