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Environmental Biology of Fishes

, Volume 66, Issue 3, pp 211–219 | Cite as

Spawning Behavior and Biparental Egg Care of the Crosshatch Triggerfish, Xanthichthys mento (Balistidae)

  • Hiroshi Kawase
Article

Abstract

Reproductive ecology of the crosshatch triggerfish, Xanthichthys mento (Balistidae) was studied at Hachijojima, Izu Islands, Japan. Males established territories and repeatedly chased females passing nearby. There were 1–3 females in each male's territory before spawning and during egg care. This species spawned in pairs on the sandy bottom. Eggs were scattered and attached to sand particles. Females care for the eggs by blowing water on them and guarding them against intruders, while males helped in guarding. Thus, biparental egg care was observed for 2 days until hatching. Both the males and females disappeared from the territories after the egg care. The reproductive ecology of this species is compared with that of other balistids and the unique features of X. mento are described.

parental care mating system territoriality demersal eggs Tetraodontiformes 

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Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

  • Hiroshi Kawase
    • 1
  1. 1.Coastal Branch of Natural History Museum and InstituteKatsuura, ChibaJapan

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