Livebearers: Difference between revisions

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Live-beraing aquarium fish are fish of certain species which are ovo-viviparous. This means that while the fry still incubate inside eggs, these eggs are not expelled at an early stage of their development, but are retained within the female's body and the fry are allowed to hatch inside her before they are expelled. These fish, for example the guppy, are among the most popular aquarium fish.

Placental mammals, on the other hand, are viviparous, and have dropped the egg stage altogether.

Almost all popular live-bearing aquarium fish belong to the family Poecilidae,that is, the guppies, mollies, platies and swordtails, but some species of sharks and rays also bear live young.

Revision as of 00:38, 19 October 2003 edit SimonP (talk \| contribs) Administrators 113,127 edits mNo edit summary ← Previous edit		Revision as of 06:28, 5 December 2003 edit undo Hadal (talk \| contribs) Administrators 31,685 edits m fixed Xiphoporus helleri link. Next edit →
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	[[Placentalia\|Placental mammals]], on the other hand, are ''viviparous'', and have dropped the egg stage altogether.		[[Placentalia\|Placental mammals]], on the other hand, are ''viviparous'', and have dropped the egg stage altogether.

	Almost all popular live-bearing aquarium fish belong to the family [[Poecilidae]],that is, the [[Poecilia reticulata\|guppies]], [[Poecilia latipinna\|mollies]], [[Xiphoporus maculatus\|platies]] and [[Xiphoporus ~~Helleri~~\|swordtails]], but some species of [[shark]]s and [[ray (fish)\|ray]]s also bear live young.		Almost all popular live-bearing aquarium fish belong to the family [[Poecilidae]],that is, the [[Poecilia reticulata\|guppies]], [[Poecilia latipinna\|mollies]], [[Xiphoporus maculatus\|platies]] and [[Xiphoporus helleri\|swordtails]], but some species of [[shark]]s and [[ray (fish)\|ray]]s also bear live young.