Social isolation, aggression, and dominance in attacks in juvenile angelfish, Pterophyllum scalare

The effects of social isolation on aggressive behavior and rank order have been investigated in small groups of juvenile angelfish, Pterophyllum scalare. An experimental protocol including a “double transfer” of the subjects was used, in which fish were transferred to new aquaria in groups, before s...

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Bibliographic Details
Published in:Aggressive behavior 1993, Vol.19 (3), p.213-222
Main Authors: Gómez-Laplaza, Luis M., Morgan, Elfed
Format: Article
Language:English
Subjects:
aggressive behavior
Agnatha and pisces
Animal ethology
aquaria
Biological and medical sciences
environmental change
Freshwater
Fundamental and applied biological sciences. Psychology
Psychology. Psychoanalysis. Psychiatry
Pterophyllum scalare
rank order
Vertebrata
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Summary:The effects of social isolation on aggressive behavior and rank order have been investigated in small groups of juvenile angelfish, Pterophyllum scalare. An experimental protocol including a “double transfer” of the subjects was used, in which fish were transferred to new aquaria in groups, before subsequent isolation and regrouping. A significant decrease in aggression was observed in the first recording session following both isolation and group transfer, after which the level returned to that recorded in the home tanks. The social hierarchy was also perturbed, but changes generally involed the two highest ranking fish in two out of the three groups, and were found not to be statistically significant. The behavior patterns are interpreted as adaptive responses to environmental change. © 1993 Wiley‐Liss, Inc.
ISSN:0096-140X
1098-2337
DOI:10.1002/1098-2337(1993)19:3<213::AID-AB2480190306>3.0.CO;2-X