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Bidyanus bidyanus in Taiwan
Bidyan perch

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Bidyanus bidyanus   (Mitchell, 1838)
Family:	Terapontidae (Grunters or tigerperches)			picture (Bibid_u0.jpg) by Yau, B.
Order:	Perciformes  (perch-likes)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:	Bidyan perch
Max. size:	40.0 cm SL (male/unsexed; Ref. 2906); max. published weight: 1,500 g (Ref. 5259)
Environment:	benthopelagic; potamodromous ; depth range - 10 m
Climate:	subtropical; 10 - 30°C; 29°S - 35°S
Global Importance:	fisheries: commercial; aquaculture: commercial
Resilience:	Medium, minimum population doubling time 1.4 - 4.4 years (tm=2-3)
Distribution:	Oceania: known only from the Murray-Darling River system, Australia. Range boundaries: Chinchilla (on the Condamine River), South Queensland, Bonshaw (on the Dumaresq River), northeastern New South Wales, Albury (on the Murray River), southeastern New South Wales, Seven Creek and Goulburn River, South Victoria.
Biology:	Found in rivers, lakes and reservoirs, preferring fast-flowing waters of rapids and races and usually forming aggregations near the surface. Usually found below rapids and weirs (Ref. 44894). Feeds on aquatic insects, mollusks, earthworms and plants. Temp.: 2-37°C. Maturity: F, 3 y and 34 cm SL; M, 23.3 cm SL. Spawning: summer (Nov.-Jan., 23-30°C water temp.), effect upstream migration. Fecundity: 500000 eggs per 1.8kg. Eggs: pelagic, 2.7-2.8 mm diameter. Hatching: 30 hrs at 26-27°C. Larvae: 3.6 mm at hatching. A good angling and food fish which has been increasingly utilized as an aquaculture species in farm dams throughout Australia (Ref. 44894)
Threatened:	Vulnerable, see IUCN Red List  (A1cd) , (Ref. 36508)
Dangerous:	harmless , Merrick, J.R. and G.E. Schmida. 1984
Coordinator:
Main Ref:	Paxton, J.R., D.F. Hoese, G.R. Allen and J.E. Hanley. 1989. (Ref. 7300)
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Taiwan country information
Common names:	Silver perch		Ref:  Liao, C.-I., H.-M. Su and E.Y. Chang, 2001
Status:	introduced		Ref:
Salinity:	freshwater
Aquaculture:	commercial		Ref:  Liao, C.-I., H.-M. Su and E.Y. Chang, 2001
Uses:	no uses
Comments:	First successful larviculture in Taiwan occurred in 1994 (Ref. 40297).
National  Checklist:	Taiwan
Country Information:	www.cia.gov/cia/publications/factbook/geos/tw.html
Occurrences:	Occurrences    Point map
Main Ref:	Liao, C.-I., H.-M. Su and E.Y. Chang, 2001
National Database:	The Fish Database of Taiwan
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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:	BiOSC Point Data | CISTI | FAO aquaculture | Google | GOBASE | GenBank ( genome, nucleotide ) | National databases | PubMed | Scirus | Tree of Life | Zoological Record Other web sites |
	Note: use the Back button of your browser to return to FishBase.
	Modified:  Casal, Christine Marie V.	Entered:  Luna, Susan M.

	Ref.:				Glossary
		(e.g. 9948)				(e.g. cephalopods)
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Page created by: Eli, 20.10.03, last modified by Eli, 26.06.07