Acestrorhynchus is a genus of 14 species of characiform fish found only in fresh water in South America, the sole genus in the family Acestrorhynchidae. Their greatest diversity is in the Orinoco and Amazon basins.
The Gunnison grouse, Gunnison sage-grouse or lesser sage-grouse, is a species of grouse endemic to the United States. It is similar to the closely related greater sage-grouse in appearance, but about a third smaller in size, with much thicker plumes behind the head; it also has a less elaborate courtship dance. It is restricted in range to southwestern Colorado and extreme southeastern Utah, with the largest population residing in the Gunnison Basin region in Colorado. Despite being native to a country where the avifauna is relatively well known, it was overlooked until the 1990s due to the similarities with the sage grouse, and only described as a new species in 2000—making it the first new avian species to be described from the USA since the 19th century. The description of C. minimus as a separate species is supported by a molecular study of genetic variation, showing that gene flow between the large-bodied and the small-bodied birds is absent.
The water opossum, also locally known as the yapok, is a marsupial of the family Didelphidae. It is the only living member of its genus, Chironectes. This semiaquatic creature is found in and near freshwater streams and lakes from Mexico through Central and South America to Argentina and is the most aquatic living marsupial. It is also the only living marsupial in which both sexes have a pouch. The thylacine, commonly referred to as the Tasmanian tiger, also exhibited this trait, but it is now extinct.
A viperfish is any species of marine fish in the genus Chauliodus. Viperfishes are mostly found in the mesopelagic zone and are characterized by long, needle-like teeth and hinged lower jaws. A typical viperfish grows to lengths of 30 cm (12 in). Viperfishes undergo diel vertical migration and are found all around the world in tropical and temperate oceans. Viperfishes possess photophores along the ventral side of their body, likely used to camouflage them by blending in with the less than 1% of light that reaches to below 200 meters depth.
The long-tongued nectar bat, also known as the northern blossom bat, honey nectar bat, least blossom-bat, dagger-toothed long-nosed fruit bat, and lesser long-tongued fruit bat, is a species of megabat. M. minimus is one of the smallest species in the family Pteropodidae, with an average length of 60–85 mm. It has a reddish-brown colouring with relatively long hair compared to the other species. The hair on the abdomen is a lighter colour, and a dark brown stripe runs bilaterally down the top of the head and back.
The swamp antechinus, also known as the little Tasmanian marsupial mouse, is a species of shrew-like marsupial of the family Dasyuridae and as such is related to dunnarts, quolls and the Tasmanian devil.
Clingfishes are fishes of the family Gobiesocidae, the only family in the order Gobiesociformes. These fairly small to very small fishes are widespread in tropical and temperate regions, mostly near the coast, but a few species in deeper seas or fresh water. Most species shelter in shallow reefs or seagrass beds, clinging to rocks, algae and seagrass leaves with their sucking disc, a structure on their chest.
Modicus tangaroa is a clingfish of the family Gobiesocidae, found only around New Zealand where it occurs on coarse substrates consisting of shell fragments and bryozoa at depths of 20–149 metres (66–489 ft). This species was described by Grahma S Hardy in 1983 from types collected from the research vessel Tangoroa over the Ranfurly Bank, East Cape in New Zealand, the species was named after the vessel.
The Miller Lake lamprey is a species of lamprey in the Petromyzontidae family endemic to the United States. Its natural habitat is the Miller Lake drainage in the state of Oregon.
Pachyrhizodus is an extinct genus of ray-finned fish that lived during the Cretaceous to Paleocene in what is now Europe, North America, South America, and Oceania. Many species are known, primarily from the Cretaceous of England and the midwestern United States.
Nannostomus minimus,, commonly known as the least pencilfish, is a freshwater species of fish belonging to the characin family Lebiasinidae. It is restricted to Guyana, where it has been reported from the Potaro and Mazaruni Rivers.
Entosphenus is a genus of lampreys.
Taaningichthys is a genus of lanternfishes.
Aspasma minima is a species of clingfish found in the Pacific Ocean near the shores of southern Japan. This species grows to 5 cm (2.0 in) in standard length. This species is the only species in the monotypic genus Aspasma. This species was described in 1887 by the German zoologist and paleontologist Ludwig Heinrich Philipp Döderlein from a type collected at a depth of 100-150 fathoms in Sagami Bay, Japan.
Modicus is a genus of clingfishes endemic to the shores of New Zealand.
Micrometrus is a genus of surfperches native to the eastern Pacific Ocean.
Lythrypnus is a genus of gobies native to the Atlantic and Pacific coasts of the Americas including Cocos Island and the Galapagos Islands.
Sphenophorus minimus, the lesser billbug, is a species of beetle in the family Dryophthoridae. It is found in North America.
Neolissochilus minimus is a species of cyprinid fish in the genus Neolissochilus. It inhabits the Western Ghats of India and has a maximum length of 12.9 centimetres (5.1 in).
Acestrorhynchus minimus is a species of fish in the family Acestrorhynchidae. It was described by Naércio Aquino de Menezes in 1969. It inhabits the Orinoco and Amazon Rivers. It reaches a maximum standard length of 6.3 cm (2.5 in).
