Oviparous: Producing eggs which are fertilized, develop and hatch outside the body.
Ovoviviparous: Producing eggs (usually with yolk) that are fertilized internally. Hatching may occur internally or external to the mother.
· Oviparous = Gk word for the egg layer organisms (also oviparous)
· Oviphagous = Gk word that indicates the egg eaters ...
As a know fact for all oviparous, we have to introduce the female in the reproduction bowl with 12-24 hours before.
Under this definition, all fish that produce eggs that hatch outside the female's body are oviparous, whether fertilization is internal or external.
Over 97% of all known fishes are oviparous,[21] that is, the eggs develop outside the mother's body. Examples of oviparous fishes include salmon, goldfish, cichlids, tuna, and eels.
Oviparous. The female "lays" one or two purses (correct terminology for the egg of a shark and its relatives), of an auger shape, with two threadlike filaments extending from one end.
All told livebearing fishes are represented in 54 families of fishes (forty are cartilaginous fishes; sharks and rays, though these groups include oviparous species as well).
They are oviparous fish, the male builds a nest in which the eggs/fry are kept for few days under the strict care of the Betta male. If you follow the next advices, you have big chances to get nice results of your Betta fish spawning.
Most fish kept by aquarists are oviparous (egg-layers), but there are some exceptions - viviparous fish (or livebearers).
 See also: Family, Marine, Water, Fish, Aquarium
  
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