i recently found a ton of dead fish in most of my pet stores fish tanks. well, i wont be shopping from there anymore. i started going to a different store and their tanks are very clean. they dont have as big of a selection unfortunatly. i talked to guy there that i think knows what he is talking about. he told me i could keep the following fish in a 50 gallon without problems: 6 bloodfin tetras 6 giant danios 2 angelfish 1 blue three spot gourami ( girl ) and some type of an algae eater. is this true?