silver perch การใช้

• Silver perch are schooling mid-water fish with a preference for flowing water.
• Reasons for the catastrophic decline of silver perch are only partially understood.
• Silver perch are omnivorous, feeding on insect larvae, molluscs, annelid worms and algae.
• In aquaria, silver perch are reported to take blood worms readily.
• Silver perch continue the trend of native fish of southeast Australia being very long-lived.
• Silver perch have now declined close to the point of extinction in the wild.
• Silver perch are similar in appearance to the sand seatrout, " Cynoscion arenarius ".
• The importance of vegetative matter in the diet of silver perch is still debated.
• Silver perch spawn in late spring and early summer.
• Silver perch are moderately fecund, with egg counts commonly around 200, 000 to 300, 000.
• As recently as the 1970s, silver perch abounded in entire Murray-Darling Basin, vast though it is.
• Barramundi, silver perch, eel-tailed catfish or tandanus catfish, jade perch and Murray cod are also used.
• Based on simple catchment area estimates, the silver perch has disappeared from 87 % of its former range.
• Recent studies that has proven more than 90 % of silver perch passing through undershot weirs are killed.
• The dam is silver perch and golden perch, while bony bream, spangled perch and eel-tailed catfish breed naturally.
• For these reasons, the Australian federal government has listed wild silver perch as critically endangered under national environmental law.
• Unfortunately silver perch are functionally extinct in the Murrumbidgee River now, as in most parts of their former range.
• Murray Cod, Golden Perch, Silver Perch and Rainbow Trout are all stocked fish in Carcoar Dam with Redfin present.
• Widespread on the eastern seaboard, the silver perch is commonly caught by inshore anglers in search of larger species.
• Suspicions are also mounting that there is competition for food between introduced carp and silver perch at larval, juvenile and adult stages.