Spawning behaviour of a butterflyfish(4.8MB, 00:00:22)Shot Date: 1991/06/21 Shot Location: Kuroshima Is., Okinawa, Japan | ||
 | species Chaetodon lunulatus Key Words | |
|
Spawning behaviour of a butterflyfish(4.8MB, 00:00:22)Shot Date: 1991/06/21 Shot Location: Kuroshima Is., Okinawa, Japan | ||
| species Chaetodon lunulatus Key Words | |
|
Animalia >Chordata >Osteichthyes >Perciformes >Chaetodontidae >Chaetodon >
The butterflyfish (Chaetodon lunulatus), which was formally described as C. trifasciatus, is monogamous. Each pair defends a feeding territory in the daytime. Spawning occurrs at dusk on the days around full or new moon in the vicinity of offshore tidal currents. If the feeding territory is located in areas of inshore currents, the pair migrates to the suitable sites for spawning in the evening. They established a small temporary territory, which they spawned adjacent to and slept within until the next morning. In this movie, the two fish swim in tandem. The leading fish is female and the following fish is male. The female releases eggs and then immediately the male releases sperm. For the detail, see Yabuta (1997).
References: Yabuta S (1997) Spawning migrations in the monogamous butterflyfish, Chaetodon trifasciatus. Ichthyol Res 44: 177-182
(Data No.momo010316cl01a)
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