scleropages การใช้

• The Asian and Australian arowanas in the genus " Scleropages " separated about 140 million years ago, during the Early Cretaceous.
• Within Osteoglossidae, the South America " Osteoglossum " arowanas diverged from the Asian and Australian " Scleropages " arowanas about 170 Mya, during the Middle Jurassic.
• Both species of " Scleropages aureus " ( red-tailed golden arowana ) is native to northern Sumatra, while the " Scleropages legendrei " ( super red arowana ) is native to Kapuas river and nearby lakes in West Kalimantan.
• Both species of " Scleropages aureus " ( red-tailed golden arowana ) is native to northern Sumatra, while the " Scleropages legendrei " ( super red arowana ) is native to Kapuas river and nearby lakes in West Kalimantan.
• The first description of this species was published in 1840 by German naturalists Salomon M黮ler and Hermann Schlegel, under the name " Osteoglossum formosum ", although later this species was placed in " Scleropages " with the name " S . formosus ".
• The majority of researchers dispute this reclassification, arguing that the published data are insufficient to justify recognizing more than one Southeast Asian species of " Scleropages ", and that divergent haplotypes used to distinguish the color strains into isolated species were found within a single color strain, contradicting the findings.
• The "'Gulf saratoga "'or "'Northern saratoga "', " Scleropages jardinii ", is a freshwater bony fish native to Australia and New Guinea, one of two species of fishes sometimes known as Australian arowanas, the other being the basal ) teleost group.
• This may be explained by the theory that Asian arowanas ( " S . formosus " ) diverged from the Australian " Scleropages ", " S . jardinii " and " S . leichardti ", about 140 Mya, making it likely that Asian arowanas were carried to Asia on the Indian subcontinent.