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Tilapia spawning technique

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Created By
Shanjaya Mandala Putra
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Edited By
Hamiman Simbolon
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Review By
Barkah Tri Basuki

Image Source : https://www.idntimes.com/health/medical/g-gultom/kulit-ikan-nila-bisa-sembuhkan-luka-bakar-c1c2

Spawning technique is a mating process that occurs between male and female broodstock that releases sperm and egg cells and occurs outside the body of the fish (externally). Generally, spawning in the hatchery business is awning enlargement efforts are carried out to obtain prospective new fish broodstcarried out, namely to preserve and obtain superior seeds which can later have a selling price, while for spock which are of high quality. Tilapia is a type of fish that is very easy to spawn naturally. In order to be easy in its implementation, the bottom of the tilapia spawning pond should be slanted about 2-5%. Then a mud hole or puddle is made at the bottom of the pond as deep as 20-30 cm as locations for spawning fish.

1. Spawning

  • Tilapia spawning is carried out en masse
  • Male and female broodstock are sown in the spawning pond together.
  • The stocking density of the spawning pond is 1 fish/m2
  • Comparison of male and female broodstock is 1 : 3
  • During the spawning process, provide feed such as in broodstock rearing ponds
  • Tilapia broodstock spawning takes place on the 7th day since the broodstock was combined
  • Spawning takes place at the bottom of the pond, usually in a puddle
  • Eggs released by the female broodstock will be fertilized by the male broodstock
  • The eggs are incubated in the mouth of the female broodstock
  • During the incubation process, the female broodstock fasts
  • Reduce the feeding dose
  • The incubation process takes about one week

2. Hatching eggs

Hatching eggs is highly influenced by water quality parameters such as temperature, pH, and dissolved oxygen. The temperature that is too high or too low will prevent the eggs from hatching. A temperature that is too high can hinder the hatching process and can even cause death. Tilapia has a habit of incubating their eggs before hatching. The fertilized eggs are incubated in the female broodstock’s mouth, then they will hatch after 4-5 days. The eggs that have hatched are called larvae.

Egg hatching process

  • The fertilized egg will immediately be caught (into the mouth) by the female broodstock
  • The eggs are incubated in the female broodstock’s mouth for about 5-7 days
  • Eggs that have hatched are called larvae
  • Fish larvae that have hatched are often seen on the edge of the spawning pond water surface
  • The length of the newly hatched larvae is about 4-5 mm
  • Larvae that are not cared for by their broodstock will swim in groups in shallow water or on the edge of the pond
  • The hatched larvae are cared for by the female female broodstock until they reach the age of 7-10 days and are 8 mm in size
  • After more than seven days, usually there are groups of tilapia larvae on the surface of the spawning pond