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Tardigrade. Tardigrades (/ ˈtɑːrdɪɡreɪdz /), [1] known colloquially as water bears or moss piglets, [2][3][4][5] are a phylum of eight-legged segmented micro-animals. [2][6] They were first described by the German zoologist Johann August Ephraim Goeze in 1773, who called them Kleiner Wasserbär ('little water bear'). [7]
The world's smallest fish depends on the measurement used. [1]Based on minimum standard length at maturity the main contenders are Paedocypris progenetica where females can reach it at 7.9 mm (0.31 in), [2] [3] [4] the stout infantfish (Schindleria brevipinguis) where females reach it at 7 mm (0.28 in) and males at 6.5 mm (0.26 in), [1] and Photocorynus spiniceps where males can reach it at 6. ...
The smallest penguin species is the little blue penguin (Eudyptula minor), which stands around 30–33 cm (12–13 in) tall and weighs 1.2–1.3 kg (2.6–2.9 lb). [68] The smallest bird of prey is the Black-thighed falconet (Microhierax fringillarius), with a wingspan of 27–32 centimetres (11–13 in), roughly the size of a sparrow. [69]
Kemp's ridley is the smallest of all sea turtle species, reaching maturity at 58–70 cm (23–28 in) carapace length and weighing only 36–45 kg (79–99 lb). [ 13 ] Typical of sea turtles, it has a dorsoventrally depressed body with specially adapted flipper-like front limbs and a beak. Kemp's ridley turtle adults reach a maximum of 75 cm ...
Satomi's pygmy seahorse (Hippocampus satomiae), named in 2008, are the world's smallest seahorse at up to 1.4 cm. This is a free-living species that is found near coral walls with soft corals. They are nocturnal and very active at night. They have been found in only a few places in Indonesia and northern Borneo.
Herre, 1927. Pandaka pygmaea on a 2013 stamp sheet of the Philippines. The dwarf pygmy goby or Philippine goby[2] (Pandaka pygmaea) is a tropical species of fish in the subfamily Gobionellinae from brackish water and mangrove areas in Southeast Asia. [1][3] It is one of the smallest fish species in the world. Males reach maturity at a standard ...
S. brevipinguis is among the smallest known fish in the world, together with species such as Paedocypris progenetica. Males of S. brevipinguis have an average standard length of 7.7 mm (0.30 in), a gravid female was 8.4 mm (0.33 in) and the maximum standard length of the species is 10 mm (0.39 in). [3] It held the record for the smallest known ...
Krill (Euphausiids)[1] (sg.: krill) are small and exclusively marine crustaceans of the order Euphausiacea, found in all the world's oceans. [2] The name "krill" comes from the Norwegian word krill, meaning "small fry of fish", [3] which is also often attributed to species of fish. Krill are considered an important trophic level connection ...