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Lucania parva : Egg 68 hours after fertilization, viewed from the dorsal aspect of the head of the embryo.
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Lucania parva : Larval fish 7 days after hatching, actual length 6 mm..
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Lucania parva : Egg 68 hours after fertilization, viewed from the anterior aspect of the head of the embryo.
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Lucania parva : Newly hatched fish, actual length 4.5 mm..
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Lucania parva : Egg 24 hours after fertilization; KV, Kupffer's vesicle.
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Fundulus albolineatus. About twice natural size
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Acanthophacelus reticulatus, showing color variations in the male.
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Tip of Intromittent Organ of Acanthophacelus reticulatus. a. Third anal ray. b, Fourth anal ray. c, fifth anal ray.
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Gambusia affinis. Top minnow. Male.
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Gambusia affinis. Top minnow. Female.
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Gambusia Affinis: New-born fish, dorsal view.
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Gambusia Affinis: Ovum with blastoderm, showing embryonic shield; ES, embryonic shield; EA, embryonic aria; GR, germ ring.
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Gambusia Affinis: Embryo with about 12 somites, side view; H, heart.
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Gambusia Affinis: Ovum with early blastoderm; B, blastoderm.
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Gambusia Affinis: New-Born fish, side view.
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Gambusia Affinis: Mature Ovum.
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Gambusia Affinis: Advanced embryo inclosed in ovarian follicle.
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Gambusia Affinis: Embryo with 3-4 somites.
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Gambusia Affinis: Embryo with 12-14 somites.
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Gambusia Affinis: Embryo with pigmentation started, included in ovarian follicle.
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Gambusia Affinis: Embryo with yolk sac nearly absorbd, removed from ovarian follicle.
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Gambusia Affinis: Ovum with later blastoderm; C, cleavage cavity.
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Top Minnow. Gambusia affinis. Male.
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Top Minnow. Gambusia affinis. Female.
