Reproductive Behavior, Eggs and Larvae of a Lutjanid Fish, Lutjanus stellatus, Observed in an Aquarium.

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Reproductive behavior and early life history of the white spotted snapper, Lutjanus stellatusAkazaki, are described from aquarium observations. Spawning took place between a female and 2-12 males in the early hours of each evening from mid-May to mid-June, 1984. Six easily distinguishable behavior patterns were involved in the spawning sequence: a) Schooling; b) Searching; c) Nuzzling; d) Rushing toward the surface; e) Spawning; and f) Post spawning. The species was considered to be a group spawner. Fertilized eggs were spherical, transparent, buoyant and unpigmented. They were 0.80-0.85mm in diameter, and contained a single oil globule measuring 0.16-0.17mm in diameter. Hatching took place 30 h after fertilization. Immediately after hatching, larvae were 2.48-2.56mm in total length and had a large ellipsoidal yolk. An oil globule was situated at the front tip of the yolk. Early life stages of L. stellatus were described for the first 3.5 days after hatching.
日本魚類学会の論文