Oscar's - how to breed and care for the Oscar fish - Aquarium Info
They are which is why many aquarists that can afford a large tank and love cichlids begin by keeping Oscar fish.
The oscar eggs hatch in two to three days, and the fry are now called “wrigglers” by aquarists or prolarvae by biologists. Dr. Harry Grier of Florida studied them under the scanning electron microscope (Grier, H. 1981. “Cement Glands and the Post Hatching Development of the Oscar.” Freshwater and Marine Aquarium. Sierra Madre, California. 4(2):26-32). The prolarvae are most unfishlike, with no fins, no eyes, no mouth, in fact nothing but a yolk sac. On top of the head are three pairs of tiny glands that secrete a sticky filamentlike cement attaching the fry to the rock. After about 24 hours, the prolarvae begin developing incipient eyes and tiny buds and ridges where the future fins will be. There is still no sight, no hearing and no other sensory capability. On the second or third day, the mouth begins to form. Then the eyes become recognizable and pigmented, and the yolk sac is much reduced. The fry are still stuck by secretions of the cement glands and rearranged by the parents into clumps. Very soon, they are moved off the rock into a pit constructed in the gravel. The parents subsequently move them to a second and sometimes a third pit during the next five to seven days. About 10 days after spawning, the fry become sighted, the pores appear, the cement glands stop secreting and the glue breaks under the strain of the tiny beating tails. The oscar fish fry become free-swimming and are ready to feed.
Oscar fish eat and grow well at 76 to 78 degrees Fahrenheit, but spawning is triggered by elevating the temperature to 82 to 85 degrees Fahrenheit. This requires large aquarium heaters (not less than 5 watts per gallon). Unfortunately, oscars think heaters are toys to be tossed about and smashed into the aquarium’s sides. Select a single, large, solid state submersible heater with a dialed temperature control and no less than five adhesive tabs for locking it onto the side of the aquarium. Other options for protecting the heater are gluing sponge rubber onto the aquarium glass adjacent to the heater or locking the heater inside a PVC tube jammed between very large immovable rocks.
Freshwater Aquarium Salt - Oscar Fish Advice Forum - Oscar Fish Care
One of the most popular aquarium fish is the oscar cichlid fish
I'll get straight to the point, is your aquarium big enough for one Oscar, plus some tankmates? You should already know that 55 gallons is the absolute minimum for one adult Oscar. If your aquarium does not meet this requirement then you have two choices, either stop reading now and enjoy what you've already got, or upgrade your aquarium by at least 75% and then come back and read the rest of the page. Sorry if that sounds a little bit harsh, but that really is your only two options. Most of the fish I am going to recommend as tank mates will require a minimum of 50 gallons just for themselves, not including the Oscar. Oscar fish need a large aquarium tank. According to , one Oscar needs a 75-gallon fish tank with a good filtration system. Two Oscars may need a 125-gallon or larger tank. Oscar fish can grow up to a foot long, and need a large tank in order to swim about freely. Oscar fish are native to the slow-moving freshwater rivers and creeks of South America. They are a very popular aquarium fish and come in many beautiful colors. Oscar fish are strong, and can accidently jump out of the fish tank if they spot something above that looks like food, so be sure to use a tight-fitting aquarium lid with a latch for your fish. They can also pull up plants and even move rocks and gravel, but their antics will give you plenty to do cleaning up after them! 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. Keeping any large fish in a tank that is too small will almost certainly result in poor water quality. Oscars produce a large amount of waste that can easily take hold of an aquarium if it's not big enough. Any fish that is forced to live in dirty and polluted water will either die or will become unhealthy. Even if your fish doesn't die straightaway, exposing fish to poor water quality can damage the immune system which may mean that your fish develops problems later on in life. Oscars that have been kept in aquariums that are too small will often not grow properly and may become stunted. So instead of your adult Oscar reaching 11 or 12 inches, it may not get any bigger than 6 inches.