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Abdel Rahman El Gamal

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Ovulation in koi carp – Video

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 …

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Permanent link to this article: http://fishconsult.org/?p=15162

Risk of excessive crowding of fish fry

Review: Abdel Rahman El Gamal (Founder of the website) The inserted picture shows an excessive crowding of tilapia fry. The crowding condition is not unique and is commonly witnessed in hatcheries and done for easy scooping and bagging. It is commonly believed that because of the short crowding period, no harm to handled fish is …

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Permanent link to this article: http://fishconsult.org/?p=15160

Construction of a small fish pond in Madagascar

Photo credit: Marcel Jean Adavelo (Madagascar) – Review: Marcel Jean Adavelo and Abdel Rahman El Gamal (Founder of the website) The inserted picture shows the construction of a small fish pond in Madagascar. Typically, such small-size ponds do not justify the use of machinery. Added to that, the farmer usually does not have the cash …

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Permanent link to this article: http://fishconsult.org/?p=15156

Tilapia zillii – unwanted in fish ponds but highly demanded in markets in Egypt

Photo credit: Suzan Alfred and Mekki Zakaria (Sudan) – Review: Abdel Rahman El Gamal (Founder of the website) The inserted picture shows a batch of fish ready for the market. The traditional basket has mainly two fish groups; soles and green tilapia (Tilapia zillii). Whether caught from natural resources such as lakes (like the attached …

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Permanent link to this article: http://fishconsult.org/?p=15153

Adipose eyelids and their functions in fish

Photo credit: Marx Perfecto C. Garcia (Philippines) Review: Abdel Rahman El Gamal (Founder the website) The inserted photo shows the eyelid in a mullet specimen (Mugil sp.). There are several theories related to the possible roles of eyelids in fishes. It is generally accepted that the eyelids may play a role in affecting the vision …

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Permanent link to this article: http://fishconsult.org/?p=15150

Bamboo fish graders in China

Photo credit: Marx Perfecto C. Garcia (Philippines)  Description: Abdel Rahman El Gamal (Founder of the website) The inserted picture was taken in an aquaculture facility in China and shows several sizes of bamboo graders. The use of bamboos in aquaculture goes back to about a century when bamboo cages were used in Indonesia. In countries …

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Permanent link to this article: http://fishconsult.org/?p=15147

Removing the premaxilla of tilapia males

Review: Abdel Rahman El Gamal (Founder of the website) The removal of the premaxilla of bone of the upper lip of tilapia males goes back to the late 1970s. The purpose of such practice is to reduce the aggressive behavior of tilapia males and hence reduce the possible injuries and/or mortality of females during the …

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Permanent link to this article: http://fishconsult.org/?p=15144

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 …

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

Natural spawning of tilapia in Madagascar using a simple practice

Photo credit: Marcel Jean Adavelo (Madagascar) – Review: Marcel Jean Adavelo and Abdel Rahman El Gamal (Founder of the website) As shown in the attached picture, the spawning tilapia pond is separated by a net with appropriate mesh size that retains the broodstock in a part of the pond while allows the produced fry and …

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Permanent link to this article: http://fishconsult.org/?p=15126

Intensive tank culture of tilapia in Egypt (Video)

Video credit: Fares Fares Arab (Egypt) and Marx Perfecto C. Garcia (Philippines) -Information source: Fares Fares Arab Description: Abdel Rahman El Gamal (Founder of the video channel) This video was filmed in an intensive fish farm located in Ismailia region, Egypt. The greenhouse has a dimension of 54×60 meters and hosts 42 grow-out circular tanks with …

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Permanent link to this article: http://fishconsult.org/?p=15120

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