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Mummichog (Female). Fundulus majalis (Walb.), Gthr.
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Round Minnow, Cyprinodon variegatus Lacepede. St. George Island, Maryland.
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Cyprinodon variegatus : Egg with blastoderm in late cleavage stage : PB, periblast.
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Cyprinodon variegatus : Newly hatched fish; actual length 4 mm..
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Cyprinodon variegatus : Egg with blastodisc of 8 cells, optical section.
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Cyprinodon variegatus : Egg showing later stage in differentiation of embryonic shield; EA, embryonic area; EEA, extra-embryonic area.
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Cyprinodon variegatus : Larval fish 5 days after hatching, actual length 5 mm.
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Cyprinodon variegatus : Egg with fully developed blastodisc (bd).
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Cyprinodon variegatus : Egg with blastoderm showing germ ring, GR, fully differentiated and an early stage in differentiation of embryonic shield, ES; PP, posterior pole of blastoderm.
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Viviparous Killifish (Goodea iuitpoldi).
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Goodea luitpoldi (Steindachner). A viviparous fish from Lake Patzcuaro, Mexico. Family Paciliidae.
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Lucania parva.
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Lucania parva : Egg with blastoderm of 16 cells.
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Lucania parva : Egg with blastoderm of 2 cells.
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Lucania parva : Egg with blastoderm of 4 cells.
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Lucania parva : Egg with blastoderm of 8 cells.
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Lucania parva : Mature unfertilized egg.
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Lucania parva : Egg just before hatching.
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Lucania parva : Egg 48 hours after fertilization.
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Lucania parva : Egg 90 hours after fertilization.
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Lucania parva : Egg with blastoderm showing advanced stage in differentiation of embryonic shield; EA, embryonic area; EEA, extra-embryonic area. GR, germ ring..
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Lucania parva : Egg showing early stage in formation of blastodisc (np).
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Lucania parva : Egg with blastoderm showing germ ring (GR) fully differentiated : PP, posterior pole of blastoderm.
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Lucania parva : Egg 68 hours after fertilization, viewed from the dorsal aspect of the head of the embryo.
