The entire purpose around maintaining a fish aquarium with Oscars is to watch them grow into large carnivorous fish. This easy feat takes a little care to accomplish. Oscar growth rate An Oscar grows between 8 to 10 inches in a year growing pretty fast if you get them a large tank to provide enough space.

While these fish grow aggressively on their own there are tried and true ways to increase an oscars size more quickly.

Oscar fish Biggest oscar fish approximately 18 inches in size oscar is the world s biggest fish ever recorded. Even though oscars grow very slowly they can become quite large over the course of their 15 to 20-year lifespans. Unfortunately many novice aquarium hobbyists do not realize just how big these fish get. How big do oscar fish get They grow very quickly up to one inch per month until they reach around 12 inches in length. In the wild they usually grow slightly larger and there have been reports of these fish growing up to 18 inches. What do oscar fish eat They are omnivorous so they ll eat a wide variety of foods.

They will hit random growth spurts while young so this plateauing of growth is normal. But putting the oscar in a bigger tank will help it grow- they seem to grow with their tank. Our last oscar burt was roughly 16 inches in length when he passed away because we had him in a 55-gallon tank. Before we changed his tank he was quite small. Yes they should grow an inch per month when they are young and slow down when they mature at 8 or so. Dirftwood is fine it may stain the water brown but it wont harm the oscar. They are not brackish species pet shops my temporarily house them with brackish species but it s the brackish fish they are keeping in fresh water not the other My oscar fish is not growing

I think the growth is very slow bcz of insufficient fish tank size. I uploaded its photo its about 6-7 years old and it is 6 inches long. I think its growth is being cut. You have permamantly stunted it. If it s now 6 years old it s fast growing days are