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

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 tank tapajos threat timid underwater view vulnerable water young