Normally my first response to any thread is done without reading everyone elses response first, so excuse me if I repeat anything already mentioned....Before switching to bigger, toothier /\/\onsters, I was the number one Oscar fan(probably for about 12 years in fact)....Then came the internet and the countless ways of obtaining even more man-ly fish.....Anyways....I've personally seen Oscars raised from 1 inch to 10 inch in 55g setups, so yes it's possible.....BUT....The deformities of the spine was apparent on all these fishes....In conclusion, I'd say a minumum of 100g is good enough for one oscar for life....COme on now, you want your "O" to thrive, so save your McDonalds money and purchase a 100g for that Oscar....Thanks

