Jun 08 2016
Day: 8 June, 2016 We understand you do not have facebook account. You established your nest and laid your eggs outside the window of our kitchen while we were in a short vacation in the Red Sea region (18-22 May). We discovered that upon our return. Since then we did all our best …
Permanent link to this article: https://fishconsult.org/?p=13354
Oct 23 2014
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
Dec 03 2013
Credit: Alain Murekambanze (Burundi) The photos show most of the artificial spawning of African catfish (Clarias gariepinus) as carried out in Kunagura Ubworozi (Burundi). The typical practices of artificial catfish –whether shown in the photos or not- include the selection of broodstock, administration of the pituitary gland extract, ovulation and egg fertilization, incubation and hatching. If …
Permanent link to this article: https://fishconsult.org/?p=10058
Nov 21 2013
Credit: Oscar Del Valle Ayala via Wilder Rodrìguez Arteaga (Peru) The photos shown are related to the reproduction of rainbow trout, in Peru. The reproduction process includes the selection of broodstock, egg stripping from female and then mixing the sperm collected from males in the fertilization process before incubating fertilized eggs until hatching.
Permanent link to this article: https://fishconsult.org/?p=9935
Oct 19 2013
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
Oct 26 2012
Credit: Worawut Koedprang (Thailand) The first photo shows a pair of clown anemone fish brooder “or clownfish” (Amphiprion ocellaris) while inhabiting a sea anemone. This species is among reef dwellers. The larger fish specimen shown in the photo is a female. The clown anemone fish are monogamous as a brooder mates with the same spouse except in case …
Permanent link to this article: https://fishconsult.org/?p=6753
Oct 02 2012
Credit: Myo Naing Oo (Myanmar) The culture of freshwater prawn of the species Macrobrachium rosenbergii is well established in Myanmar whether in hatcheries or farms. Hatchery practices start with the collection of females carrying eggs from natural waters and taken into hatchery indoor facilities till hatching takes place. Note: We decided not to watermark the photos in …
Permanent link to this article: https://fishconsult.org/?p=6241
Sep 24 2012
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 …
Permanent link to this article: https://fishconsult.org/?p=6010
Nov 03 2011
Eyed stage is an advanced stage of embryonic development. Hatching will largely depend on water temperature. Note that because tilapia eggs are opaque, a special arrangement will be required to enable seeing through eggs. Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us …
Permanent link to this article: https://fishconsult.org/?p=1012
Nov 03 2011
The photo shows a female of Nile tilapia (Oreochromis niloticus) incubates an advanced stage of embryonic development as shown in the dark-colored eggs. The period till hatching will be affected by water temperature. Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us …
Permanent link to this article: https://fishconsult.org/?p=954
