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Husbandry Notes on the Lesser Electric Ray
Author(s) -
Dean Mason N.,
Nietfeld Theresa E.,
Conklin Daniel S.
Publication year - 2005
Publication title -
north american journal of aquaculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.432
H-Index - 41
eISSN - 1548-8454
pISSN - 1522-2055
DOI - 10.1577/fa03-064.1
Subject(s) - biology , predation , infestation , animal husbandry , praziquantel , fishery , zoology , ecology , helminths , agronomy , agriculture , schistosomiasis
The lesser electric ray Narcine brasiliensis is a small member of the electric ray order Torpediniformes (Elasmobranchii: Batoidea). Although common circumglobally in the wild, this genus does not traditionally fare well in captivity. This study expands on methods previously published for captive maintenance of the lesser electric ray in large recirculating systems and outlines the husbandry of this species in displays equivalent to those in public aquaria. Once conditioned, rays will feed readily on polychaetes and shrimp; however, this species is prone to monogenean infestation and subsequent bacterial infections. As a result of parasitic infestation, these rays must be monitored carefully for anorexia. Common warning signs and administration of medication are outlined. Prophylactic treatment with the antihelminthic Praziquantel is required if the animals are to be maintained for any length of time in a closed recirculating system. To reduce ventral abrasion and facilitate capture of natural prey (in which polychaetes are excavated with the jaws), we recommend using fine sand or silt sediment for aquaria substrate.

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