The oscar Astronotus ocellatus is a species of fish from the cichlid family known under a variety of common names including tiger oscar velvet cichlid and marble cichlid. ocellatus specimens are often found for sale as a food fish in the local markets. Oscar fish normally reach a maximum size of 11 or 12 inches in captivity and can weigh up to approximately 3 lbs.

Oscar fish The fish has been introduced to other areas including india china Oscars can exceed 14 or 15 inches however fish like these are quite uncommon. Oscar fish grow at an incredible rate. Fish stores normally sell them anywhere between 1 and 2 inches as babies. Once in your aquarium and being fed on Group size will of course vary depending on how many oscars are in the group but based on five tank size should be 300 gallons plus. Any words of wisdom based on tank size for an oscar fish It may be tempting due to the initial layout for an oscar fish tank and all the equipment you will need to buy a smaller one than required. Oscars have been known to grow up to 16 40cm and over 3 pounds 1.5kg - but usually 12 is their maximum size. Oscars in a 4ft aquarium will usually grow no larger than 8 .
Ph 7.0 hardness 12.0 Be sure that the fish you are introducing is the same size as the current oscar and that the maximum size is close to that of the oscar. They are very territorial and will either eat the fish if it s too small or get beat up and harasses by it s larger tank mate since all south american cichlids are aggressive and territorial. Largest oscar fish are found to be between 20 to 22 inches in size. Full grown oscar fish oscars grow up to 18 inches in length and weigh approximately more than three pounds when at maturity. If kept in captivity oscar fish grows up to 12 inches in length but larger specimens of oscars have already been reported. An oscar fish will quite easily reach 12 inches in as little as 18 months. They are also bulky fish that can reach weights of over 2lb. However if you want to give your fish the best chance in life give it a healthy environment to live in then it is absolutely paramount that it starts its life off in the correct sized aquarium. A minimum fish tank size of 40 gallons about 152 liters is recommended if you are keeping an oscar.
Oscars are very messy fish so fish tank maintenance is paramount. Perform your weekly 10-15 water changes so that your oscar always has clean water and the waste that is not processed by the aquarium filter is removed. Most fish oscars included have a set range of size they ll grow to rather like humans in an optimal environment. So for instance if you have a 20 gallon tank and try to throw an oscar in there it will quickly outgrow that environm The true adult size of the fish must be used in the calculation for tank stocking. Many owners however have no idea how old their fish is or how large it will grow to be. Before making any fish purchase always research the fish in question to determine the actual adult size.

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