The directions on fish food normally tell you to feed your fish several times a day and for a given amount of time. Personally I don't take much notice of these directions as the manufacturers are just trying to make you use as much of their product as possible. In the wild fish will not have a reliable food source like they do in your aquarium, they will have to go looking for their food which may result in them going hungry for a day or two. In the dry season when the waters recede fish can often go without food for weeks.

Most people feed their fish every day, sometimes more than once a day. An adult Oscar Fish does not need to be fed on a daily basis, you could quite feasibly feed your fish every other day, or even three or four times a week and your fish would be perfectly okay. I must emphasize that baby and juvenile Oscar's should be fed on a daily basis until they reach adulthood.

I normally feed my fish as much food as they can eat in two or three minutes and then I stop. I don't put a handful of food in, I introduce five or six pellets at a time and I wait until the Oscars have eaten these and then I introduce a few more. If all the Oscars are about the same size I leave it up to them to compete for the food as I believe this keeps them active and alert.

For information on what to feed your Oscar, please visit the link below for an extensive article on various types of food you can give your Oscar fish

What can I feed my Oscar fish?

The Oscar Fish is a semi-aggressive Cichlid which means it could exhibit aggressive behaviour to any fish you put in with it. However, there is a number of fish that do make good tank mates for your Oscar Fish. Silver Dollars make very good tankmates if added in small groups. Other semi-aggressive Cichlids such as Severeum, FireMouth Cichlid, Blue Acara & Convict Cichlid can be added with caution. Other fishes that I have found to be good tank mates for Oscars include Eartheaters (Jurupari), Plecostomus, Leporinus, Clown Loach, Jade Eyed Cichlid, Syndontis Catfish. Tankmates must be able to defend themselves and compete for food. Adding fish that are too small may well end up as a tasty snack for your Oscar. Please visit our section on tank mates for Oscars Tankmates for Oscar Fish...

Water changes are an integral part when keeping fish in an aquarium. Failure to carry out adequate water changes will result in poor water quality which can make your fish more susceptible to disease and even death.

If your aquarium is big enough, stocked properly and you feed your fish sensibly then nitrate levels shouldn't reach high levels within a weekly period. In reality you shouldn't really need to change any more than one third of the water each week. However we all know that overstocking aquariums is quite common and therefore nitrate levels will be that much higher at the end of the week. In these cases water changes will need to be slightly larger. It's quite easy to work out, if you test your water for nitrate and the readings are 40 ppm, it will take a 50% water change to reduce the nitrates back to 20 ppm.

If you have tested your water and your nitrate levels are extremely high level instead of carrying out a huge water change, you might be better off carrying out several smaller water changes over a few days. Sometimes fish that have been housed in an aquarium with high nitrate actually get used to being exposed to these high levels. If you were to suddenly change a massive amount of water all at once, it has been known for fish to become shocked and die. I don't think this is a common occurrence but it's something you should be aware of.

It is important that you carry out a nitrate test properly and read the instructions fully. This video will show you exactly how to carry out a nitrate test

Using buckets to change water in a large aquarium is very time-consuming. However, there are products you can get that will make the water change a piece of cake. One such product is called the and is extremely popular amongst many of our members.

The simple answer to this question is yes, of course, you can put plants in your Oscar tank, however, don't be surprised if the Oscars uproot them, or even just completely rip them to pieces. For some reason Oscars seem to take a dislike to plants and nearly every person who keeps these fish will tell you that they are not successful in keeping the two together.

The Amazon Sword is probably the most successful plant I have ever managed to put in with my Oscars. They are native to the Amazon River so will look authentic if you want to set up an Amazon theme aquarium.They are a fairly hardy plant that will not die on you overnight. Even though the Oscar may be able to operate one of these plants, they can be rerooted fairly easily.

If you keep plants remember that you will have to look after them in much the same way as your garden plants. If you really want plants then you could try artificial aquarium plants. Some of these are quite realistic and obviously fairly tough. The Oscar will still uproot them and they will also need cleaning every now and then because they collect algae quite easily. I have tried keeping plants on various occasions but I gave up a few years ago because it just isn't worth the bother in my opinion

Oscar Fish normally reach sizes between 10 and 13 inches in a home aquarium. However, it's possible for an Oscar to exceed this size occasionally, but it is a rare occurrence