06-21-2010, 03:26 AM
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Oscar would enjoy a good quality pellet food such as Hikari Bio- Gold along with freezedried shrimp or shrimp pellets,frozen Krill ,frozen shrimp, freezedried crickets such as those offered to reptiles(lizards) and chopped earthworms.
I would submit that minimum tank size for one oscar to be 75 gallons with filtration cpable of filtering eight times the volume of water that the tank holds each hour.Example..75x8 = 600 gallons per hour.
Water change of 50 percent each week.
Feeding Oscars as mentioned ,,live foods such as store bought feeder fish, is quickest way to introduce disease and the Oscar would /will..do much better with prepared foods mentioned.
Not providing proper enviornment (ie) large tank, proper diet,Lot's of filtration, and large weekly water changes, is primary reason that Oscars don't reach size potential before they succumb to sickness and disease.
Adult Oscar can reach 12 to 14 inches with proper care and they are NOT an easy fish to care for properly and many ,many, folks do not provide these fish with much of a chance of ever reaching their potential.
Most of the Oscars purchased or offered for sale are juvenile fish that may do ok in smaller tanks for three or four months but when they begin to out grow the tank, despite promises to provide larger tank as the fish grows,they often become sick due to water quality issues,improper diet,inadequate filtration,poor tank maint, or all of the above.
Oscars can live ten to twelve years and this should be considered before purchasing these fish. If one is not prepared to provide for the fish for it's lifetime, then one should not purchase the fish.
If everyone who declared..."Oh I plan on getting my Oscar a larger tank in a few months" did so,, you would see many more adult oscars in aquariums ,and far fewer in lakes where they pose a threat to native fishes through predation,reproduction,and by competeing for same foods.