Video credit: Mohamed Atta (Egypt) – Review: Abdel Rahman El Gamal (Founder of the video channel) This video has been filmed in a koi hatchery in Vietnam. The focus of this short video is to share how the ovulation looks like in Koi carp which will be almost the same in most fish species. It …
Tag: ovulation
Permanent link to this article: https://fishconsult.org/?p=15162
Nov 19 2014
Egg sampling (catheterization) of Asian seabass in Vietnam- Video
Video credit: Ahmed Shaheen (Egypt) Review: Abdel Rahman El Gamal (Founder of the website and video channel) This video was filmed in a marine hatchery in Vietnam The video shows egg catheterization in Asian seabass (Lates calcarifer). Note that sampled fish has been slightly anesthetized in the shown ice box using ice. Determining the …
Permanent link to this article: https://fishconsult.org/?p=12075
Oct 23 2014
Fish Hatchery Management (Reproductive biology – natural reproduction – spawning induction – hatchery operations and management)
This lecture was delivered during October 2014 as a part of Fish Culture Development training course. This course is annually organized by the Egyptian International Centre for Agriculture (EICA). In order to address the management of fish hatchery management, it was necessary to start begin the lecture with the modes of fish reproduction as well …
Permanent link to this article: https://fishconsult.org/?p=11978
Oct 19 2013
Artificial reproduction of African catfish (from hormonal injection till hatching) – Video
Source: www.fishconsult.org Review: Abdel Rahman El Gamal (Founder of the website and video channel) This 8-min video addresses the sequence of the artificial reproduction of African catfish (Clarias gareipinus). The process starts with the hormonal induction of catfish brood fish using the extract of catfish pituitary gland. Afterwards, a female catfish is stripped upon ovulation …
Permanent link to this article: https://fishconsult.org/?p=9603
Apr 07 2012
Artificial reproduction of African catfish (Clarias gariepinus) – Egg stripping (Video)
Credit for the clip: Samuel Simon Zigizo (South Sudan) – Description: Abdel Rahman El Gamal This video shows the stripping of a female of African catfish, Clarias gariepinus. This practice takes place in artificial reproduction of the species and should be followed by artificial fertilization using testes taken from a sacrificed male. We are able to see …
Permanent link to this article: https://fishconsult.org/?p=3272
Nov 30 2011
Sampling of fish eggs through catheterization (biopsy)
Review: Abdel Rahman El Gamal (Founder of the website and video channel) Determining the size (diameter) of eggs from female’s ovary by catheterization (biopsy) is being used as a criteria to determine the sexual maturation of females. Catheters could be rigid (made of glass or hard plastic) or flexible (made of polyethylene or vinyl). The …
Permanent link to this article: https://fishconsult.org/?p=1726
Nov 27 2011
Fish hatchery management
This presentation addresses the management of fish hatcheries starting with some information on fish reproduction in general. Before addressing artificial reproduction, natural collection of wild fry or post larvae have been covered. The presentation includes sexual maturation and broodstock management including maintenance and replacement. Examples and hatchery technologies and so requirements have been included. Various …
Permanent link to this article: https://fishconsult.org/?p=1620