Oscar Fish Breeding

Oscar Fish Breeding: "Oscar fish reach sexual maturity at about 14 months when they are 6 to 10 inches long. Size is not reliable, and even age cannot be counted on for getting results. Many mature oscars refuse to spawn until they are 2 or even 3 years old.

The only certain way to sex oscar fish is by looking at the breeding tubes. In the female, the tube (ovipositor) is short, stubby and flat at the tip as though sliced off, and about as long as it is wide. The male’s breeding tube is about a third the mass of the female’s tube, very thin, curved and comes to a point; its length is far greater than its width. The tubes are only apparent just before spawning."



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