Category Archive: Special arrangements in aquaculture enterprises

This category includes the special arrangements that should exist in aquaculture enterprise whether farms or hatcheries. These arrangements could be species specific such as over-wintering greenhouses for Nile tilapia in temperature regions.

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 30 2014

Fencing fish ponds in Benin

Credit: Ismael Radwan (Egypt) The photo shows the fencing of fish ponds using nets and bamboo sticks. The purpose is to prevent the entry of unwanted animals especially snakes and birds.  

Permanent link to this article: http://fishconsult.org/?p=10324

Sep 23 2013

Use of top netting to exclude fish-eating birds (Colombia)

Credit: Eudes Emilio Sanchez (Colombia) The top structures seen over the fish ponds are lines of thread, which are used as a network to prevent fish poaching by birds. These lines of thread are made of weather-resistant materials, and must be placed at a height of 1.8 meters above pond dikes to act against birds and …

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Permanent link to this article: http://fishconsult.org/?p=9286

Mar 19 2012

Biofence system and microalgae cultivation in a marine hatchery in Greece

Credit: George Triantaphyllidis (Lamans, Greece) This photo shows a Biofence system and conventional bags for cultivation of microalgae in a marine hatchery in Greece 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=3156

Feb 27 2012

Culture of Nile tilapia in integration with banana in Egypt

The two photos cover the overall integrated aquaculture-horticulture project. In this specific project, horticulture is represented by banana while Nile tilapia (Oreochromis niloticus) represents the aquaculture component. Because of water scarcity in Egypt, the surface irrigation of banana farming is not encouraged due to its high water consumption. In order to compromise between the restrictions …

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Permanent link to this article: http://fishconsult.org/?p=2644

Nov 17 2011

Gravel filter in earthen fish pond (Egypt)

Mechanisms used in filtering water will depend on potential usage of water. This photo shows a type of gravel filters whereas filtered water is used in tilapia hatchery as well as for landscaping. This filter is located in 1000-m2 earthen pond. The filter is established above concrete base. The outer dimension of the filter is …

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Permanent link to this article: http://fishconsult.org/?p=1501

Nov 14 2011

Fish harvesting facilities in earthen ponds (harvest ditch) in Egypt

Fish harvest in earthen ponds is significantly facilitated by establishing harvest ditches. In addition to facilitating fish harvest, ditches help in drying pond bottom. Depending on pond size and the slope of pond bottom, placing harvest ditches are determined. Ditches could be peripheral especially in large ponds or central in smaller ponds. Establishing harvest ditches …

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Permanent link to this article: http://fishconsult.org/?p=1468

Nov 13 2011

Fish harvesting facilities in earthen ponds (catch pond) in Egypt

Fish harvesting in earthen ponds especially in large ponds is a significant task. Catch ponds are recommended to carry out efficient fish harvesting. For a 4-ha fish pond, a catch pond of the following dimensions will be sufficient; 2.5 m high, 10-m long, and 2-m wide. Catch pond should have a rocky bottom and sides. The …

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Permanent link to this article: http://fishconsult.org/?p=1458

Nov 12 2011

Overwintering facility for gilthead seabream and European seabass (Italy)

Gilthead seabream (Sparus auratus) and European seabass (Dicentrachus labrachus) although can relatively tolerate low temperature, but cannot survive severe cold which could be encountered in Europe during winter and hence overwintering facilities may be required. The photo shows a high curtain surrounding the earthen pond where fish are overwintered. The curtains can be managed (folded or …

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Permanent link to this article: http://fishconsult.org/?p=1437

Nov 12 2011

Overwintering of Nile tilapia (Oreochromis niloticus) in greenhouses in earthen ponds (Egypt)

This flexible system provide enough protection to Nile tilapia (Oreochromis niloticus) during cold weather in Egypt and in the same time allows fish to disperse in the pond and feed whenever weather gets warmer. Overwinter greenhouses are placed in earthen ponds whereas plastic covers go well below water surface but not reaching pond bottom. The area beneath greenhouses will …

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Permanent link to this article: http://fishconsult.org/?p=1419