fish
   Anabantiformes
   Anguilliformes
   Atheriniformes
   Characiformes
   Cichlidae
     Cichlinae
       Amatitlania
       Andinoacara
       Apistogramma
       Astronotus
       Australoheros
       Biotoecus
       Bujurquina
       Cichla
       Cichlasoma
       Cincelichthys
       Cleithracara
       Crenicara
       Crenicichla
       Cribroheros
       Dicrossus
       Geophagus
       Guianacara
       Gymnogeophagus
       Heros
       Hoplarchus
       Ivanacara
       Krobia
       Laetacara
       Maskaheros
       Mesoheros
       Mesonauta
       Mikrogeophagus
       Nandopsis
       Nannacara
       Oscura
       Parachromis
       Paraneetroplus
       Pterophyllum
         altum
         eimekei
         scalare
           locations
             Essequibo
             Guyana red spot
             Manacapuru
             Manacapuru x Nanay
             Peru
             Rio Momon
             Rio Nanay
             Rio Negro
               redback
             Rio Ventuari
             Santa Isabel
             Tapajos River
           varieties
         leopoldi
       Retroculus
       Rheoheros
       Rocio
       Symphysodon
       Taeniacara
       Teleocichla
       Thorichthys
       Tomocichla
       Trichromis
       Uaru
       Viejita
       Wajpamheros
     Etroplinae
     Pseudocrenilabrinae
     Ptychochrominae
   Cypriniformes
   Cyprinodontiformes
   Gobiiformes
   Perciformes
   Siluriformes
   Synbranchiformes
   more
inverts
plants
misc