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Poecilia sphenops, called the Mexican molly or simply the molly, is a species of poeciliid fish from Central America. It was once understood as a widespread species with numerous local variants ranging from Mexico to Venezuela, but these variants are today considered distinct species belonging to the P. sphenops complex and P. sphenops itself as being native to Mexico, Guatemala, and Honduras.
Gold mollies are yellow-gold like albino mollies but have dark eyes and occasionally scales edged in red. [3] Silver mollies have had all pigments but silver eliminated through selective breeding. [3] Chocolate mollies exhibit brown rather than black coloration. [3] In addition to the colors, fancy mollies differ in the shape of their fins. [3]
Livebearers are fish that retain their eggs inside the body and give birth to live, free-swimming young. They are especially prized by aquarium owners. They are especially prized by aquarium owners. Among aquarium fish, livebearers are nearly all members of the family Poeciliidae and include: guppies , mollies , platies and swordtails .
Histotrophic (tissue eating) viviparity means embryos develop in the female's oviducts but obtain nutrients by consuming other tissues, such as ova or zygotes. [10] This has been observed primarily among sharks such as the shortfin mako and porbeagle , but is known for a few bony fish as well such as the halfbeak Nomorhamphus ebrardtii . [ 12 ]
Desert Spider, Stegodyphus lineatus, one of the best-described species that participates in matriphagy Matriphagy is the consumption of the mother by her offspring. [1] [2] The behavior generally takes place within the first few weeks of life and has been documented in some species of insects, nematode worms, pseudoscorpions, and other arachnids as well as in caecilian amphibians.
Tooey has agreed to watch the Trading Post while Molly and her family head to their super-secret-berry-picking-spot, but their trip is cut short by a swarm of pesky mosquitos. If only Molly hadn't accidentally swapped the bug spray for dog perfume! A book in the Trading Post has a recipe for repellent made from wild plants.
A female Cyphotilapia frontosa mouthbrooding fry which can be seen looking out from her mouth. Mouthbrooding, also known as oral incubation and buccal incubation, is the care given by some groups of animals to their offspring by holding them in the mouth of the parent for extended periods of time.
During this stage, the larvae do not yet feed externally. These larvae typically have poorly developed eyes and few or no teeth. [5] The leptocephalus stage of the larvae begins after the nutrients from the yolk have been absorbed and the eyes and teeth are formed. At this point, the larvae usually have long forward-facing pointy teeth.