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''Maccullochella'' is a genus of large Australian predatory freshwater fish within the Percichthyidae family. The ''Maccullochella'' genus was named after an early Australian fish researcher with the surname ''McCulloch''. The ''Maccullochella'' species are called 'cod' in the vernacular. At the time of European settlement of Australia, members of the ''Maccullochella'' genus dominated the Murray-Darling river system (Murray cod, ''M. peelii'', and trout cod, ''M. macquariensis'') and 4 East Coast river systems (eastern freshwater cod, ''M. ikei'', of the Clarence and Richmond Rivers, Brisbane River cod, ''Maccullochella'' sp., and Mary River cod, ''M. mariensis''). As large, long-lived, top-order predators with delayed sexual maturity and relatively low fecundity (fertility) ''Maccullochella'' species are extremely vulnerable to overfishing, siltation and other forms of habitat degradation, and river regulation by dams and weirs that alter river environments and negatively affect spawning and recruitment (survival) of young fish. The ''Maccullochella'' species have not fared well since European settlement. All are endangered or critically endangered except for Murray cod, which are considered 'Threatened' and 'Vulnerable' under national and state legislation. There are grave concerns over the future of wild Murray cod now, as there for all the ''Maccullochella'' species. ==Species== There are currently four recognized species in this genus: * ''Maccullochella ikei'' Rowland, 1986 (Eastern Freshwater Cod) * ''Maccullochella macquariensis'' (G. Cuvier, 1829) (Trout Cod) * ''Maccullochella mariensis'' Rowland, 1993 (Mary River Cod) * ''Maccullochella peelii'' (T. L. Mitchell, 1838) (Murray Cod) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Maccullochella」の詳細全文を読む スポンサード リンク
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