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Category: Photos

Yolk sac fry of Nile tilapia, Oreochromis niloticus

The photo shows freshly hatched yolk sac fry of Nile tilapia, Oreochromis niloticus. Yolks provide the main nutrition to this early larval stage. The rate and duration of yolk consumption will be determined based on water temperature. Afterwards, yolk-sac fry will turn to swim-up fry. Note: We decided not to watermark the photos in order not to …

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Permanent link to this article: http://fishconsult.org/?p=1029

Blue tilapia (Oreochromis auraeus)

Blue tilapia (Oreochromis auraeus) is a mouth brooder tilapia. Watch the blue nose and incomplete bands on the tail. This species is more tolerant to low water temperature than Nile tilapia (Oreochromis niloticus). Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us if …

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Permanent link to this article: http://fishconsult.org/?p=1024

The use of air-lift technology in a tilapia hatchery (Egypt)

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 …

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Permanent link to this article: http://fishconsult.org/?p=1016

Embryonic development of tilapia (eyed stage)

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 …

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Permanent link to this article: http://fishconsult.org/?p=1012

Red tilapia hybrids (more towards orange color)

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 …

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Permanent link to this article: http://fishconsult.org/?p=1004

Sex identification of a tilapia female

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. …

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Permanent link to this article: http://fishconsult.org/?p=998

Sexual maturation of tilapia females and males

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. …

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Permanent link to this article: http://fishconsult.org/?p=991

Locally-made incubators for the embryos of Nile tilapia, Oreochromis niloticus in Egypt

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 …

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Permanent link to this article: http://fishconsult.org/?p=985

Crowding of tilapia fry for easy counting and loading

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 …

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Permanent link to this article: http://fishconsult.org/?p=980

Commercial tilapia hatchery during off-season (Egypt)

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 …

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Permanent link to this article: http://fishconsult.org/?p=973

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