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The fish family Psychrolutidae (commonly known as blobfishes, [2] south america river teacher, [2] flathead sculpins, [2] or tadpole sculpins [2]) contains over 35 recognized species in 8 genera. [3] This family consists of bottom-dwelling marine sculpins shaped like tadpoles , with large heads and bodies that taper back into small, flat tails.
An example of a tadpole person in a drawing by a child aged 4½. A tadpole person [1] [2] [3] or headfooter [4] [5] is a simplistic representation of a human being as a figure without a torso, with arms and legs attached to the head. Tadpole people appear in young children's drawings before they learn to draw torsos and move on to more ...
A tadpole or polliwog (also spelled pollywog) is the larval stage in the biological life cycle of an amphibian. Most tadpoles are fully aquatic, though some species of amphibians have tadpoles that are terrestrial. Tadpoles have some fish-like features that may not be found in adult amphibians such as a lateral line, gills and swimming tails.
The eggs hatch and the tadpoles take 30 to 55 days to develop before undergoing metamorphosis into juvenile toads about 1 cm (0.4 in) long. The tadpoles feed on algae which they scrape from underwater vegetation. Adults are carnivorous and feed on any small invertebrates they can find. [6]
The life cycle is short. The tadpole-shaped larva usually performs the tail shift less than one day after fecundation, becoming fully functional juveniles. Adults usually reproduce after 5 to 7 days depending on the species. [11] Fertilisation is external. The body wall ruptures during egg release, killing the animal. [30]
The female lays up to 38 eggs and the male grasps her and deposits sperm directly onto the eggs. Tadpoles develop but remain within the protective egg coat until hatching occurs when high ground-water levels after rain cause the nest to become flooded at 4 to 6 months. Tadpole development takes six to eight months.
American spadefoot toads have a unique diet. The adults' and tadpoles' diets vary. The adults' diet consists of invertebrates. [9] They eat flies, crickets, caterpillars, moths, spiders, centipedes, millipedes, earthworms, and snails. [10] The tadpoles' diet is related to its surroundings and food supply.
Both adults and tadpoles of the species are known to be occasional cannibals. [8] [10] [11] The tadpoles of this species are obligate carnivores that swallow their prey whole. [10] The diet of L. laevis tadpoles is similar to that of adults and includes snails, insects, other tadpoles, and crustaceans. [9]