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Sexual size dimorphism and male contest in wild Siamese fighting fish
Author(s) -
Jaroensutasinee M.,
Jaroensutasinee K.
Publication year - 2001
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.2001.tb00225.x
Subject(s) - agonistic behaviour , biology , sexual dimorphism , fish <actinopterygii> , contest , zoology , scramble competition , adult male , ecology , aggression , fishery , competition (biology) , endocrinology , social psychology , psychology , political science , law
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 ±1 and ±2 S.D 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.