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・ River Bend Farm
・ River Bend Formation
・ River Bend Lodge, California
・ River Bend Nature Center
・ River Bend Nuclear Generating Station
・ River Bend Transit
・ River Bend, Gauteng
・ River Bend, Missouri
・ River Bend, North Carolina
・ River Bend, West Virginia
・ River Beult
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・ River Bibiay
・ River bifurcation
・ River Biss
River blackfish
・ River Blackwater (Northern Ireland)
・ River Blackwater (River Loddon)
・ River Blackwater (River Test)
・ River Blackwater, Essex
・ River Bladnoch
・ River Blakewater, Lancashire
・ River Bleng
・ River Blithe
・ River Bluff (disambiguation)
・ River Bluff (Wintergreen, Virginia)
・ River Bluff High School
・ River Bluff, Kentucky
・ River Blyth
・ River Blyth, Northumberland


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River blackfish : ウィキペディア英語版
River blackfish

The river blackfish (''Gadopsis marmoratus'') is a freshwater fish endemic to the temperate waters of south-eastern Australia.〔 It is found from southern Queensland through to central Victoria, including in the Murray-Darling river system. It is also found in some eastern and southern flowing coastal rivers. Found primarily in upland and "midland" habitats, though early records of fish fauna suggest it was originally far more extensively distributed and was found in some lowland habitats as well. Originally, river blackfish co-inhabited many of its lowland and "midland" habitats with species such as Murray cod and golden perch, and its upland habitats with species such as trout cod and Macquarie perch. It is a popular angling fish in some parts of its range.〔
==Description==
River blackfish are elongated with a rounded body, distinct snout and large mouth, and small to moderate sized eyes. The caudal fin, soft dorsal fin and anal fin are rounded. The spiny dorsal fin is low, weak and blends into the soft dorsal fin. Colour varies but is usually either yellow or green with dark green mottling, or a very dark purple/black colour.
It is an ambush predator that takes crayfish, shrimp, small fish and aquatic insects.〔 It is strongly nocturnal.
Murray-Darling river blackfish show a maximum size of around 30 cm and < 0.8 kg, with larger specimens from coastal drainages reaching up to 60 cm (Gellibrand River).
It is a highly underrated sportsfish, particularly the Southern form (see below). It is fast and strong, and has been shown to take flies and lures, even surface lures, in addition to the more usual worm baits.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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