Sexual size dimorphism and male contest in wild Siamese fighting fish

Larger males of the wild Siamese fighting fish Betta splendens were more successful in male contests. There were no differences in fighting duration among treatments. Comparing agonistic behaviour between large and small males in plus or minus 1 and plus or minus 2 . treatments, larger males attacke...

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Bibliographic Details
Published in:Journal of fish biology 2001-12, Vol.59 (6), p.1614-1621
Main Authors: Jaroensutasinee, M, Jaroensutasinee, K
Format: Article
Language:English
Subjects:
Betta splendens
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Summary:Larger males of the wild Siamese fighting fish Betta splendens were more successful in male contests. There were no differences in fighting duration among treatments. Comparing agonistic behaviour between large and small males in plus or minus 1 and plus or minus 2 . treatments, larger males attacked, chased and performed total agonistic behaviour more than smaller males. There were no differences between larger and smaller males concerning other agonistic behaviour during fighting. Females presented with two potential mates of different sizes did not prefer larger males. Copyright 2001 The Fisheries Society of the British Isles
ISSN:0022-1112
1095-8649
DOI:10.1006/jfbi.2001.1790