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In water, then collected in mouth once fertilized and held there until birth; some hold fry in mouth for up to a week after birth
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Fertilized by spawning before being gathered in mouth
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Freshwater cichlids, bettas, cardinal fish, gobies, blennies
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A spot in substrate, a structure made of plant materials, bubble nest (foamy structure)
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Bass, bluegills, sticklebacks, gouramis, bettas
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Sticky eggs: laid within a certain area under cover; nonsticky eggs: set adrift in open water
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Male swims by and sprays semen, or milt, around the area
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Cardinal tetras, tiger barbs, zebra danios, goldfish, koi
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Laid in one spot, usually substrate or glass
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Male swims by and fertilizes eggs
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Rainbow fish, killifish, dwarf cichlids, clownfish
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Male dives into substrate to fertilize eggs
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Killifish, rare and endangered species in the wild
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