A self-cleaning device for outlet screens in fish rearing tanks

A. Prilutzky, V. Birkan, S. Appelbaum

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


A simple, self-cleaning outlet for fish rearing tanks is described. The device prevents the frequent blockage of the protective nets of the water-outlet, caused by bacteria colonies and suspended particles. The function of the device is based on the feeding behaviour of fish, to scrape-off and consume fouling from substratums. The device is comprised of a closed compartment, mounted around the water-outlet pipe and its protective net in the rearing tank. Carp (Cyprinus carpio L.), were placed inside the compartment, where they fed by scraping the fouling from the protective nets, as no other feed was provided. The permanent 'grazing' by the carp, kept the outlet-net constantly clear of debris. Based on this principle, another device was developed for effective removal of suspended particles from the rearing tank, thus decreasing the organic load on the water purification units of the recirculating system. The devices are simple, maintenance-free, require no precisely adjusted parameters, are easy to install and, above all, work efficiently.

Original languageEnglish
Pages (from-to)281-288
Number of pages8
JournalAquacultural Engineering
Issue number3
StatePublished - 1 Jan 1995

ASJC Scopus subject areas

  • Aquatic Science


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