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- Two-spined_blackfish abstract "Gadopsis bispinosus, the two-spined blackfish, is a species of temperate perch endemic to Australia.It is found in the cool, clear, strong-flowing, cobble bottomed, sub-alpine rivers and streams (ranging from small to large) in the southeast corner of the Murray-Darling river system. Their range encompasses northeast Victoria, southeast New South Wales and the Australian Capital Territory. Originally two-spined blackfish co-inhabited many of these waters with Macquarie perch and trout cod.Two-spined blackfish are similar in shape and appearance to river blackfish, though their spiny dorsal fin usually contain only two spines (hence their scientific name) in comparison to river blackfish which have 7 to 13 distinguishable spines in their spiny dorsal fin. (In reality, this is a rather academic point as two-spined blackfish have blurred the difference between the dorsal spines and the dorsal rays that make up their soft dorsal fin, and any distinctions between the two weakly calcified dorsal spines and the dorsal rays that follow it are hard to pick in a living specimen.)The two-spined blackfish is similar to the river blackfish in spawning and diet; however, they prefer rocks and the interstices ("gaps") between to timber as the main spawning and habitat sites. Two-spined blackfish are also much smaller, commonly 15 to 17 cm and a maximum size of 30 cm.The species feeds mostly on aquatic insect larvae and terrestrial invertebrates, and occasionally other fishes and crayfish. Two-spined blackfish breed between October and December. Larvae hatch after around 16 days and remain at the spawning site with the male parent for another 3 weeks.Two-spined blackfish have declined seriously due to stream siltation and competition by introduced species, particularly introduced trout species. The species suffers serious predation and competition from introduced species of trout but due its nocturnal habits and cryptic, cover-oriented behaviour it appears to survive in sufficient numbers to maintain populations in high quality habitats. Recent severe bushfires in south-eastern Australia (2003–2006), however, have filled many upland rivers with large quantities of silt, and infilled the interstices ("gaps") between larger rocks that two-spined blackfish normally use as a refuge from predatory trout species. The presumed result will be increased levels of trout predation on two-spined blackfish and the long-term future of two-spined blackfish is now of some concern. The blackfish species are very low in fecundity, slow-growing and long lived, and have low migratory tendencies, so are extremely vulnerable to overfishing and localised extinctions.".
- Two-spined_blackfish binomialAuthority Andrew_C._Sanger.
- Two-spined_blackfish class Actinopterygii.
- Two-spined_blackfish conservationStatusSystem "iucn3.1".
- Two-spined_blackfish family Temperate_perch.
- Two-spined_blackfish genus Gadopsis.
- Two-spined_blackfish kingdom Animal.
- Two-spined_blackfish order Perciformes.
- Two-spined_blackfish phylum Chordate.
- Two-spined_blackfish thumbnail Gadopsis_bispinosus,_Two-spined_blackfish.jpg?width=300.
- Two-spined_blackfish wikiPageExternalLink 2spnblkf.html.
- Two-spined_blackfish wikiPageID "2165644".
- Two-spined_blackfish wikiPageLength "4133".
- Two-spined_blackfish wikiPageOutDegree "22".
- Two-spined_blackfish wikiPageRevisionID "649744811".
- Two-spined_blackfish wikiPageWikiLink Actinopterygii.
- Two-spined_blackfish wikiPageWikiLink Andrew_C._Sanger.
- Two-spined_blackfish wikiPageWikiLink Animal.
- Two-spined_blackfish wikiPageWikiLink Animalia.
- Two-spined_blackfish wikiPageWikiLink Australia.
- Two-spined_blackfish wikiPageWikiLink Australian_Capital_Territory.
- Two-spined_blackfish wikiPageWikiLink Category:Freshwater_fish_of_Australia.
- Two-spined_blackfish wikiPageWikiLink Category:Percichthyidae.
- Two-spined_blackfish wikiPageWikiLink Chordata.
- Two-spined_blackfish wikiPageWikiLink Chordate.
- Two-spined_blackfish wikiPageWikiLink Darling_River.
- Two-spined_blackfish wikiPageWikiLink Dorsal_fin.
- Two-spined_blackfish wikiPageWikiLink Gadopsis.
- Two-spined_blackfish wikiPageWikiLink Macquarie_perch.
- Two-spined_blackfish wikiPageWikiLink Murray_River.
- Two-spined_blackfish wikiPageWikiLink New_South_Wales.
- Two-spined_blackfish wikiPageWikiLink Percichthyidae.
- Two-spined_blackfish wikiPageWikiLink Perciformes.
- Two-spined_blackfish wikiPageWikiLink River_blackfish.
- Two-spined_blackfish wikiPageWikiLink Species.
- Two-spined_blackfish wikiPageWikiLink Temperate_perch.
- Two-spined_blackfish wikiPageWikiLink Trout.
- Two-spined_blackfish wikiPageWikiLink Trout_cod.
- Two-spined_blackfish wikiPageWikiLink Victoria_(Australia).
- Two-spined_blackfish wikiPageWikiLinkText "Two-spined blackfish".
- Two-spined_blackfish wikiPageWikiLinkText "blackfish".
- Two-spined_blackfish wikiPageWikiLinkText "two-spined blackfish".
- Two-spined_blackfish binomial "Gadopsis bispinosus".
- Two-spined_blackfish binomialAuthority "Sanger, 1984".
- Two-spined_blackfish classis Actinopterygii.
- Two-spined_blackfish familia Percichthyidae.
- Two-spined_blackfish familia Temperate_perch.
- Two-spined_blackfish genus "Gadopsis".
- Two-spined_blackfish hasPhotoCollection Two-spined_blackfish.
- Two-spined_blackfish name "Two-spined blackfish".
- Two-spined_blackfish ordo Perciformes.
- Two-spined_blackfish phylum Chordata.
- Two-spined_blackfish phylum Chordate.
- Two-spined_blackfish regnum Animal.
- Two-spined_blackfish regnum Animalia.
- Two-spined_blackfish species "G. bispinosus".
- Two-spined_blackfish statusSystem "iucn3.1".
- Two-spined_blackfish wikiPageUsesTemplate Template:Reflist.
- Two-spined_blackfish wikiPageUsesTemplate Template:Taxobox.
- Two-spined_blackfish subject Category:Freshwater_fish_of_Australia.
- Two-spined_blackfish subject Category:Percichthyidae.
- Two-spined_blackfish hypernym Perch.
- Two-spined_blackfish type Animal.
- Two-spined_blackfish type Article.
- Two-spined_blackfish type Eukaryote.
- Two-spined_blackfish type Fish.
- Two-spined_blackfish type Species.
- Two-spined_blackfish type Article.
- Two-spined_blackfish type Thing.
- Two-spined_blackfish type Q152.
- Two-spined_blackfish type Q19088.
- Two-spined_blackfish type Q729.
- Two-spined_blackfish comment "Gadopsis bispinosus, the two-spined blackfish, is a species of temperate perch endemic to Australia.It is found in the cool, clear, strong-flowing, cobble bottomed, sub-alpine rivers and streams (ranging from small to large) in the southeast corner of the Murray-Darling river system. Their range encompasses northeast Victoria, southeast New South Wales and the Australian Capital Territory.".
- Two-spined_blackfish label "Two-spined blackfish".
- Two-spined_blackfish sameAs Gadopsis_bispinosus.
- Two-spined_blackfish sameAs Gadopsis_bispinosus.
- Two-spined_blackfish sameAs Gadopsis_bispinosus.
- Two-spined_blackfish sameAs m.06rqpn.
- Two-spined_blackfish sameAs Gadopsis_bispinosus.
- Two-spined_blackfish sameAs Gadopsis_bispinosus.
- Two-spined_blackfish sameAs Q6431588.
- Two-spined_blackfish sameAs Q6431588.
- Two-spined_blackfish wasDerivedFrom Two-spined_blackfish?oldid=649744811.
- Two-spined_blackfish depiction Gadopsis_bispinosus,_Two-spined_blackfish.jpg.
- Two-spined_blackfish isPrimaryTopicOf Two-spined_blackfish.
- Two-spined_blackfish name "Two-spined blackfish".