well had goldfish as a child, then forgot, always loved looking at them in stores, girlfriend had a 3 gallon guppy tank, i helped her upgrade to a 30 from a garage sale. She gave me the 3 gallon, got a dragon goby (walmart fish people aren't helpfull. Well within a week of getting him i knew everything the internet has to offer on dragon gobys . Upgraded to a 40 gallon, then a 75 gallon with a 10gallon breeding feede rguppies under it. Needless to say the dragon goby died shortly after being put into the 40 due to space and being in freshwater. stupid walmart