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Melanochromis johannii in Hawaii (USA)
Bluegray mbuna

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Melanochromis johannii   (Eccles, 1973)
Family:	Cichlidae (Cichlids) , subfamily: Pseudocrenilabrinae			picture (Mejoh_m1.jpg) by Zaitsev, O.
Order:	Perciformes  (perch-likes)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:	Bluegray mbuna
Max. size:	10.0 cm TL (male/unsexed; Ref. 5663)
Environment:	benthopelagic; pH range: 8 - 8; dH range: 9 - 19
Climate:	tropical; 22 - 25°C; 13°S - 14°S
Global Importance:	aquarium: commercial
Resilience:	Medium, minimum population doubling time 1.4 - 4.4 years (Fec<1000)
Distribution:	Africa: endemic to Lake Malawi. Occurs in Masinje Rocks, Cape Ngombo.
Diagnosis:	Males are brilliant sky blue to dark blue; the colors show a "checkerboard" pattern with alternating light and dark patches; several light-colored "egg spots" on their anal fin; females and juveniles bright yellow-orange in color (Ref. 44091).
Biology:	Found in rocky habitats of shoreline areas (Ref. 58302). Omnivorous and feed on both plant and animal matter (Ref. 44091)
Threatened:	Vulnerable, see IUCN Red List  (D2) , (Ref. 36508)
Dangerous:	harmless
Coordinator:	Kullander, Sven O.
Main Ref:	Maréchal, C.. 1991. (Ref. 5663)
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Hawaii (USA) country information
Common names:	Johanni cichlid, Blue mbuna, Johanni mbuna		Ref:  Mundy, B.C., 2005
Status:	introduced		Ref:
Salinity:	freshwater
Aquaculture:			Ref:
Uses:	no uses
Comments:	Thriving populations can be found on the windward side of O'ahu, Ho'omaluhia Reservoir and the adjacent Kamo'oalii Stream (Ref. 44091). Also Ref. 58302.
Country Information:
Occurrences:	Occurrences    Point map
Main Ref:	Yamamoto, M.N. and A.W. Tagawa, 2000
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More information:	Countries FAO areas Occurrences Introductions Ecosystem Ecology Diet Food items Food consumption Ration Predators Ciguatera Fish loss Common names Synonyms Pictures Sounds Reproduction Maturity Spawning Eggs Egg dev. Larvae Larval dynamics References Growth L-W relationship L-L relationship Length frequencies Recruitment Max. age & size Metabolism Morphology Morphometrics Gill area Brains Vision Collaborators Genetics Allele frequencies Heritability Strains Aquaculture Aquaculture profile Diseases Ecotoxicology Processing Speed Swim. type Stamps
	Note: No data are available if label is black .
Tools:	Biogeographic modelling | E-book | Field guide | Length-frequency Wizard | Life-history tool | Point map |
Internet sources:	Alien/Invasive species database | BiOSC Point Data | CISTI | Google | GOBASE | GenBank ( genome, nucleotide ) | PubMed | Scirus | Public aquariums | Tree of Life | Zoological Record Other web sites |
	Note: use the Back button of your browser to return to FishBase.
	Modified:  Ortañez, Auda Kareen	Entered:  Binohlan, Crispina B.

	Ref.:				Glossary
		(e.g. 9948)				(e.g. cephalopods)
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CGNET - US

Page created by: Eli, 20.10.03, last modified by Eli, 26.06.07