Social isolation and aggressiveness in the Amazonian juvenile fish Astronotus ocellatus
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منابع مشابه
Social isolation and aggressiveness in the Amazonian juvenile fish Astronotus ocellatus.
We tested the effect of social isolation on the aggressiveness of an Amazonian fish: Astronotus ocellatus. Ten juvenile fishes were transferred from a group aquarium (60 x 60 x 40 cm) containing 15 individuals (without distinguishing sex) to an isolation aquarium (50 x 40 x 40 cm). Aggressiveness was tested by means of attacks on and displays toward the mirror image. The behavior was video-reco...
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a bacterial septicaemia occurred in 3-female oscars (astronotus ocellatus) of about 2-year old held in 300l freshwater aquaria in south tehran. the external signs of infected fish consisted of lethargy, anaemia, distension (clinical dropsy), exophthalmia and cataract. internally there was a large amount of red-ascitic fluid accumulated in the abdominal cavity with haemorrhages/ hyperaemia of in...
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ژورنال
عنوان ژورنال: Brazilian Journal of Biology
سال: 2006
ISSN: 1519-6984
DOI: 10.1590/s1519-69842006000200007