Tag: natural spawning

Fish hatchery management (2019 updated lecture)

This lecture on the management of fish hatcheries was delivered in Fish Culture Development training course during August 2019. The lecture starts with general information related to the various modes of reproduction among aquatic animals of finfish, shell fish, mollusks and others including substrate spawners, mouth brooders till giving birth. The levels of parental care …

Continue reading

Permanent link to this article: https://fishconsult.org/?p=15128

Fish hatchery management (April 2014 version)

This lecture was delivered in the Fish Culture Development training course which started on April 2014. This course is organized by the Egyptian International Centre for Agriculture “EICA” and supported by Japan International Cooperation Agency “JICA”. The course hosts 16 African trainees from 11 African countries. The lecture focused more on the management issues related …

Continue reading

Permanent link to this article: https://fishconsult.org/?p=10836

Natural spawning of African catfish, Clarias garepinus in Benin

Credit: Ismael Radwan (Egypt) Source: www.fishconsult.org The photos show the process of the natural spawning of African catfish, Clarias garepinus in Benin. It is believed that the natural spawning when carried out properly, this approach is easier and more economical compared to artificial spawning. The photos show the spawning tanks in which two pairs of …

Continue reading

Permanent link to this article: https://fishconsult.org/?p=10498

Hatchery technology and early nursing of black catfish, Rhamdia quelen in Uruguay

Photo credit: Claudia Turra (Uruguay) –  Description: Claudia Turra and Abdel Rahman El Gamal In nature, the black catfish, Rhamdia quelen reproduce during most of the year except during the winter months. Being fractional spawners, females release small amounts of eggs several times during the spawning season. The absolute fecundity (number of eggs/female) could range from about …

Continue reading

Permanent link to this article: https://fishconsult.org/?p=6010

Traditional facility for seed production of catfish species (Clarias sp.) in Indonesia

Credit: Anna Jamil (Indonesia) This photo shows a hatchery facility for African catfish (Clarias gariepinus) and others Clarias species. Usually is such facility, natural spawning is practiced. In general, the growing aquaculture activities of African catfish (hatching and farming) reflect the high consumption demand on these species in Indonesia. Many restaurants offer catfish in their …

Continue reading

Permanent link to this article: https://fishconsult.org/?p=2949

Open system for tilapia spawning using hapas in Egypt

The photo shows an open-system for tilapia hatchery in Egypt. This type of hatcheries is based on hapas placed in earthen ponds. The advantage of such system is mainly economical as well as the ability to nurse fry in nursing hapas in this open system. However, because the spawning in this system takes place during …

Continue reading

Permanent link to this article: https://fishconsult.org/?p=896