Osteoglossidae
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Osteoglossidae is a family of large-sized freshwater fish, which includes the arowanas. They are commonly known as bonytongues. The family has been regarded as containing two extant subfamilies Arapai
Phareodus testis, a famous member of the extinct subfamily Phareodontinae
Hiodon tergisus NOAA
Campylomormyrus curvirostris
Arapaimidae
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Arapaimidae is a family of freshwater ray-finned fish belonging to the order Osteoglossiformes. It includes the South American arapaimas of the Amazon and Essequibo basins and the African arowana from
Illustration by Louis Agassiz of what is now considered the type specimen for A. agassizii, with osteological study (from Spix and Agassiz, 1829)
Salted paiche (Arapaima gigas) stall in Mercado de Bele, Iquitos, Peru
A. gigas in aquarium