Items under ownership of Abdel Rahman El Gamal, PhD
Nov 03 2011
The use of air lift technology in a tilapia hatchery (Egypt). This is a reliable means in maintaining water current during egg incubation and early nursing. Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us if you wish to use a picture or …
Permanent link to this article: https://fishconsult.org/?p=1016
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
This particular red tilapia which is more towards orange color resulted from the mating of blue tilapia (oreochromis aureus) with mutant red tilapia (this hybrid will not breed true). Red hybrids have been backcrossed with blue tilapia targeting to increase the contribution of blue tilapia genes in the genetic make-up and hence enhance passing the cold tolerance …
Permanent link to this article: https://fishconsult.org/?p=1004
Nov 03 2011
The photo shows a female of Nile tilapia, Oreochromis niloticus based on her papilla. For smaller sizes and/or with personnel who are not familiar with tilapia, a dye named as crystal violet may be used to show clearly the papilla. Note: We decided not to watermark the photos in order not to upset its clarity. …
Permanent link to this article: https://fishconsult.org/?p=998
Nov 03 2011
The photo shows mature tilapia females and males prior to the spawning season. Watch the genital papillas of tilapia male (right) and female (left). Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us if you wish to use a picture or more. …
Permanent link to this article: https://fishconsult.org/?p=991
Nov 03 2011
The photo shows locally made incubators used in various types of tilapia hatcheries (Egypt). The production of such hatchery is in several million of tilapia fry. Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us if you wish to use a picture …
Permanent link to this article: https://fishconsult.org/?p=985
Nov 03 2011
Crowding tilapia fry for easy and quick counting and loading. In order to reduce possible stress during this operation, it is very important to maintain proper densities for the shortest time possible. Aeration and/or water current would be required throughout this period of unfavorable condition to handled fry. Note: We decided not to watermark the photos in …
Permanent link to this article: https://fishconsult.org/?p=980
Nov 03 2011
This photo shows a commercial hatchery of Nile tilapia (Oreochromis niloticus) in Egypt during off-season. Egg incubators and fry nursing facilities are shown. Depending on the demand for tilapia fingerlings, the spawning season usually ends on September whereas hatcheries carry out necessary maintenance and overwinter broodstock and left-over fingerlings. Note: We decided not to watermark …
Permanent link to this article: https://fishconsult.org/?p=973
Nov 03 2011
This is a model of a small-scale tilapia hatchery which could exist in fish farming communities of small to medium size. This type hatchery targets to fulfill given farms requirements of the fry of Nile tilapia, Oreochromis niloticus with a possibility to sell extras to others. An estimated production capacity of such model hatchery can …
Permanent link to this article: https://fishconsult.org/?p=967
Nov 03 2011
This photo shows a commercial tilapia hatchery in Aswan. This hatchery belongs to Lake Nasser Development Authority. Untill the present, the fingerlings of Nile tilapia, (Oreochromis niloticus) produced in the hatchery are used for a stock enhancement program for Lake Nasser. The picture shows the outdoor facilities of the hatchery which has also indoor facilities. Note: …
Permanent link to this article: https://fishconsult.org/?p=960
