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Category: A.A. EL GAMAL

Items under ownership of Abdel Rahman El Gamal, PhD

Apr 04 2015

Freshwater aquaculture of rainbow trout in Denmark

Photo credit:Gurgen Khanamirian (Armenia) Review: Gurgen Khanamirianand Abdel Rahman El Gamal (Founder of the website) The inserted picture was taken in an intensive rainbow trout freshwater farm located in Central Jutland (Denmark). Fish production in this given farm amounts 100-110 kg/m3. The following review provides some background information on the development of trout culture in Denmark. …

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Permanent link to this article: http://fishconsult.org/?p=12525

Mar 24 2015

Jellyfish processing and export in SriLanka

Photo credit:Tim Huntington (UK) Technical review: Abdel Rahman El Gamal (Founder of the website)           This jellyfish resource remains un-utilized for many years until an emerging demand on jellyfish showed up and led to a significant activity in SriLanka within a relatively short time. In order to meet the increasing demand, …

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Permanent link to this article: http://fishconsult.org/?p=12490

Mar 11 2015

Peaceful angelfish may fight sometimes – Video

This video has been filmed during December 2014 in the Sea World, San Diego, California, USA. Before going over the biological information, I was surprised to see how these peaceful fish –as their name tells- can fight. In fact, angelfish are generally peaceful especially when not mating but they under certain conditions such as overcrowding, …

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Permanent link to this article: http://fishconsult.org/?p=12464

Feb 25 2015

Oil trapping and swim bladder inflation of marine fish

Review: Abdel Rahman El Gamal (Founder of the website)     The inserted picture was taken in a marine hatchery in Italy in which gilthead seabream and European seabass are reproduced. The simple devices shown on the water surface of the tank are skimmers which trap oil originating from rotifers being fed an enrichment diet. …

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Permanent link to this article: http://fishconsult.org/?p=12433

Jan 27 2015

Hormonal sex reversal of tilapia fry (practice and contradicting opinions) – Video

After a short introduction of tilapia in aquaculture, this 17-min video focuses on the production of all-male tilapia through the sex reversal practices using male hormone. The logic sequence of the sex reversal process has been maintained to large extent starting by the sexual differentiation in tilapia then determining the appropriate age and/size for successful …

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Permanent link to this article: http://fishconsult.org/?p=12261

Jan 17 2015

Production of all-male tilapia through hybridization – Video

Author: Abdel Rahman El Gamal (Founder of the website and video channel) This 8-min presentation addresses one specific topic which is the use of hybridization in the production of all-male tilapia fingerlings. The presentation highlighted to role of tilapia in global aquaculture as well as the necessity of producing all-male tilapia. Hybridization among tilapia species …

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Permanent link to this article: http://fishconsult.org/?p=12238

Jan 09 2015

California two-spot Octopus, Octopus bimaculoides (Description, feeding, reproduction, camouflage) – Video

This video was filmed at the Sea World, San Diego, USA Source: www.fishconsult.org   Introduction: The California two-spot octopus (Octopus bimaculoides), also known as the “bimac” octopus, is an octopus species found off the coast of California (from central California to northern Baja California). The species is normally found in the shallow areas of about 20-m depth so they …

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Permanent link to this article: http://fishconsult.org/?p=12232

Nov 25 2014

Liming fish ponds

This 4-slide information bite addresses the liming of fish ponds including the different purposes of liming as well as types of lime and criteria of each lime form. The applications of lime has been addressed and supported by photos. Determining the quantity and need through analysis has been also covered. [gview file=”http://fishconsult.org/wp-content/uploads/2014/11/Liming-fish-ponds.pdf”]       …

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Permanent link to this article: http://fishconsult.org/?p=12107

Nov 14 2014

Small-scale aquaculture in Rural Development (Features- Models- Promotion)

This lecture was delivered during November, 2014 in Fish Culture Development training course. This course is annually organized by the “Egyptian International Centre for Agriculture – EICA”.  This lecture focuses on small-scale aquaculture in rural development. The handling highlights the  features of rural societies especially in regard to aquaculture and criteria of appropriate fish species …

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Permanent link to this article: http://fishconsult.org/?p=12054

Nov 13 2014

Live Fish Handling: During: stocking– sampling– harvesting- grading- marking- anesthesia- hatchery operations & transportation

This lecture was delivered during November, 2014 in Fish Culture Development training course. This course is annually organized by the “Egyptian International Centre for Agriculture – EICA”.  This lecture focuses on handling issues during main practices of aquaculture whether in hatcheries or farms. The handling stress is highlighted as well as means to alleviate the …

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Permanent link to this article: http://fishconsult.org/?p=12051

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