Ichthyological Research

, Volume 64, Issue 2, pp 250–255 | Cite as

Sexual dimorphism and dichromatism in the cyprinid fish Puntius titteya

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Abstract

We documented sexual dimorphism and dichromatism in the cyprinid fish Puntius titteya. We observed no sexual difference in body size, although males had longer fins than females. Male body coloration was redder and exhibited a higher saturation than that of females. However, in females, coloration in the cheek (around the gill cover) was near red and exhibited high saturation compared to coloration of the abdomen. These results clearly indicate sexual dimorphism in fin size and dichromatism in P. titteya, which suggests that this species has a high potential use as a model for studying sexual selection.

Keywords

Sexual differences Fin length Coloration Sexual selection 

Notes

Acknowledgements

We are grateful to the two anonymous reviewers for their useful comments and to S. Fukuda and A. Sato for their help in this study. This study complies with the current laws of Japan. The authors declare that they have no conflict of interest.

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Copyright information

© The Ichthyological Society of Japan 2016

Authors and Affiliations

  1. 1.Department of BiologyTokyo Gakugei UniversityKoganeiJapan

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