The most important fish in Lake Chad are the characin (Alestes baremoze) and the Nile perch (Lates niloticus).    From Wordnik.com.  [Lake Chad flooded savanna] Reference

These fish include the pacu (Metynnis and Mylossoma), tambaqui (Colossoma macropomum), pirarucu (Arapaima gigas), sardinha (Triportheus angulatus), and the smaller pirana (Serrasalmus spp.), a carnivorous characin.    From Wordnik.com.  [Iquitos varzea] Reference

These fish include the pacu (Metynnis and Mylossoma), tambaqui (Colossoma macropomum), pirarucu (Arapaima gigas), sardinha (Triportheus angulatus), and the smaller carnivorous characin, the pirana (Serrasalmus spp.).    From Wordnik.com.  [Purus varzea] Reference

Another member of the large characin clan, the lemon tetra has a fairly elongated body like its smaller relative the neon tetra and like neons and other characins, the lemon tetra does best if kept in small schools of six to eight fish.    From Wordnik.com.  [Aquarium Supplies] Reference

Drag to Playlist hujeta/rocket/silver/characin gar, senegal bichir, acei cichlids in my planted tank my 55 gallon planted tank is home to a characin gar, senegal bichir, 16 acei cichlids, a few chinese algae eaters and a juvenile rainbow shark.    From Wordnik.com.  [WN.com - Business News] Reference

Uploaded: 2010-06-19 hujeta/rocket/silver/characin gar, senegal bichir, acei cichlids in my planted tank hujeta/rocket/silver/characin gar, senegal bichir, acei cichlids in my planted tank my 55 gallon planted tank is home to a characin gar, senegal bichir, 16 acei cichlids, a few chinese algae eaters and a juvenile rainbow shark.    From Wordnik.com.  [WN.com - Business News] Reference