popular and hardy silver dollar serrasalmid, freshwater species, timid and frightful, endemic of tapajos river basin

adaptable air animal aqua aquarium aquatic aquatrade argenteus background basin bright business care conditions controlled dark decorative demanding design display dollar dwarf eco ecology endemic exotic fauna filter fin fish fishkeeping free freshwater frightful gravel hardy healthy ichthyology import instinct lift light low metynnis natural nature ornamental pet popular protection river sale sand serrasalmid serrasalmidae shop side silver small sociable space species substrate tank tapajos threat timid understanding underwater view vulnerable water young