pretty neat-o! although, as an avid fish-lover, i am obligated to say that it is not too humane. those cardinal tetras grow to be about 2 inches long, and the general rule of thumb for aquariums is "1 inch of fish per 1 gallon of water." so unless that condom was holding 4 gallons of water, that is not so friendly. also, tetras are schooling fish. they need buddies. at least 4 of them anyway. if you would like to try this, i would say MAYBE a single platy would work. no tetras, bettas, or goldfish.
but i digress! it was purely obligatory banter. i apologize for my joy killing ways. this is truly one of the best uses for a condom i've ever seen, regardless of the inhumanity. because hey man, aren't condoms inhumane by nature anyway?
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