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Sarcopterygii (/ ˌ s ɑːr k ɒ p t ə ˈ r ɪ dʒ i. aɪ /; from Ancient Greek σάρξ (sárx) 'flesh' and πτέρυξ (ptérux) 'wing, fin') — sometimes considered synonymous with Crossopterygii (from Ancient Greek κροσσός (krossós) 'fringe') — is a clade (traditionally a class or subclass) of vertebrate animals which includes a group of bony fish commonly referred to as lobe ...
After an elaborate courtship, the lungfish spawn in pairs, depositing large adhesive eggs amongst aquatic plants. [9] They spawn from August until November, before the spring rains, in flowing streams that are at least a metre deep. [7] Eggs are most abundant during September and October. The stimulus for spawning is believed to be day length.
Lungfish are freshwater vertebrates belonging to the class Dipnoi. [1] Lungfish are best known for retaining ancestral characteristics within the Osteichthyes, including the ability to breathe air, and ancestral structures within Sarcopterygii, including the presence of lobed fins with a well-developed internal skeleton.
Since a fertilized egg represents a complete organism at one stage of its life cycle, eating an egg is a form of predation, the killing of another organism for food. Egg predation is found widely across the animal kingdom, including in fish, birds, snakes, mammals, and arthropods. Some species are specialist egg predators, but many more are ...
While clams are their preferred food, the sinuous sea creatures were more than happy to chow down on the crabs. As they did, a positive feedback loop began, what biologists call a trophic cascade.
The world's oldest known wild bird may soon be a mom again! The U.S. Fish and Wildlife Service (FWS) posted on X (formerly known as Twitter) on Tuesday, Dec. 3, that Wisdom, a 74-year-old Laysan ...
The common yabby (Cherax destructor) is an Australian freshwater crustacean in the Parastacidae family.It is listed as a vulnerable species [1] of crayfish by the International Union for Conservation of Nature (IUCN), though the wild yabby populations remain strong, and have expanded into new habitats created by reservoirs and farm dams.
Lots of kid-friendly activities occur on the Easter holiday itself—dyeing eggs, egg hunts, candy-eating—but you may be wondering: What can children do to gear up for the big basket-toting day ...