I need help finding species that live in the Acandí river basin. The only fish I get when I search for species in and around Acandí is hyphessobrycon columbianus, which is a great centerpiece schooling fish, but I'm looking for more than just Colombian tetras for my tank. This is for my upcoming...

75 gallon 48x18x21in Temp - 80F TDS - 69 ppm pH - 6.4 (the value of 7.15 came from my poorly calibrated pH meter) 36" Finnex Stingray 48" T5 Sunblaster Eheim 2217 Fluval 304 Hydor 300w inline heater Substrate - pool filter sand with a few handfuls of boiled gravel from the creek Various pieces...