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Rhadinocentrus Ornatus
The ornate rainbowfish (''Rhadinocentrus ornatus'') is a species of rainbowfish endemic to an area in eastern Australia, where it is native to coastal regions and sandy offshore islands in southern Queensland and northern New South Wales. It is the only known member of its genus. It is a popular aquarium fish. Description The ornate rainbowfish is a small, slender and rather elongated species of rainbowfish. It has two dorsal fins that are only narrowly separated, and the first dorsal fin is considerably smaller than the second. There are 3 to 5 thin, soft spines in the first dorsal fin while the second dorsal fin has 11–15 segmented rays. This species is highly variable in colour over its range. The body is semi-transparent, and they have two rows of black scales along the middle of their flanks. They have iridescent scales above the lateral line and just below the dorsal fin, and these can be either red or a metallic light blue. The dorsal, anal and caudal fins are normally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Tate Regan
Charles Tate Regan FRS (1 February 1878 – 12 January 1943) was a British ichthyologist, working mainly around the beginning of the 20th century. He did extensive work on fish classification schemes. Born in Sherborne, Dorset, he was educated at Derby School and Queens' College, Cambridge and in 1901 joined the staff of the Natural History Museum, where he became Keeper of Zoology, and later director of the entire museum, in which role he served from 1927 to 1938. Regan was elected Fellow of the Royal Society in 1917. Regan mentored a number of scientists, among them Ethelwynn Trewavas, who continued his work at the British Natural History Museum. Species Among the species he described is the Siamese fighting fish (''Betta splendens''). In turn, a number of fish species have been named ''regani'' in his honour: *A Thorny Catfish '' Anadoras regani'' (Steindachner, 1908) *The Dwarf Cichlid '' Apistogramma regani'' *'' Apogon regani'' *A Catfish '' Astroblepus regani'' * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bribie Island
Bribie Island is the smallest and most northerly of three major sand islands forming the coastline sheltering the northern part of Moreton Bay, Queensland, Australia. The others are Moreton Island and North Stradbroke Island. Bribie Island is long, and at its widest. Archibald Meston believed that the name of the island came from a corruption of a mainland word for it, ''Boorabee'' meaning ''koala''. However, the correct Joondaburri name for the island is in fact ''Yarun''. Bribie Island hugs the coastline and tapers to a long spit at its most northern point near Caloundra, and is separated from the mainland by Pumicestone Passage. The ocean side of the island is somewhat sheltered from prevailing winds by Moreton Island and associated sand banks and has only a small surf break. The lee side is calm, with white sandy beaches in the south. Most of the island is uninhabited national park () and forestry plantations. The southern end of the island has been intensively urbanis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Territoriality
In ethology, territory is the sociographical area that an animal consistently defends against conspecific competition (or, occasionally, against animals of other species) using agonistic behaviors or (less commonly) real physical aggression. Animals that actively defend territories in this way are referred to as being territorial or displaying territorialism. Territoriality is only shown by a minority of species. More commonly, an individual or a group of animals occupies an area that it habitually uses but does not necessarily defend; this is called its home range. The home ranges of different groups of animals often overlap, and in these overlap areas the groups tend to avoid each other rather than seeking to confront and expel each other. Within the home range there may be a ''core area'' that no other individual group uses, but, again, this is as a result of avoidance. Function The ultimate function of animals inhabiting and defending a territory is to increase the indiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexual Dimorphism
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most animals and some plants. Differences may include secondary sex characteristics, size, weight, colour, markings, or behavioural or cognitive traits. These differences may be subtle or exaggerated and may be subjected to sexual selection and natural selection. The opposite of dimorphism is ''monomorphism'', which is when both biological sexes are phenotypically indistinguishable from each other. Overview Ornamentation and coloration Common and easily identified types of dimorphism consist of ornamentation and coloration, though not always apparent. A difference in coloration of sexes within a given species is called sexual dichromatism, which is commonly seen in many species of birds and reptiles. Sexual selection leads to the exaggerated dim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omnivory
An omnivore () is an animal that has the ability to eat and survive on both plant and animal matter. Obtaining energy and nutrients from plant and animal matter, omnivores digest carbohydrates, protein, fat, and fiber, and metabolize the nutrients and energy of the sources absorbed. Often, they have the ability to incorporate food sources such as algae, fungi, and bacteria into their diet. Omnivores come from diverse backgrounds that often independently evolved sophisticated consumption capabilities. For instance, dogs evolved from primarily carnivorous organisms (Carnivora) while pigs evolved from primarily herbivorous organisms (Artiodactyla). Despite this, physical characteristics such as tooth morphology may be reliable indicators of diet in mammals, with such morphological adaptation having been observed in bears. The variety of different animals that are classified as omnivores can be placed into further sub-categories depending on their feeding behaviors. Frugivores ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudomugil Mellis
The honey blue-eye (''Pseudomugil mellis'') is an endangered species of fish in the subfamily Pseudomugilinae. It is Endemism, endemic to southeastern Queensland, Queensland, Australia, where it is found in mildly acidic, often tannin-stained, ponds and streams in wallum habitat. Taxonomy Previously considered a colour variant of the related pacific blue-eye (''Pseudomugil signifer''), the honey blue-eye was described by Gerald R. Allen and Walter Ivantsoff in 1982. The species name is derived from the Latin word ''mel'' "honey". It is markedly smaller than its close relative. It was confirmed genetically as distinct in a molecular study of it and the Pacific blue-eye in 2004. Description The honey blue-eye is a small, pale honey coloured fish that can attain up to in length as an adult, with the largest recorded being a male of . As the common name suggests, the honey blue-eye has blue eyes. It has blue cheeks and a single fine midlateral line running along its body from the ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nannoperca Oxleyana
''Nannoperca oxleyana'', commonly known as the Oxleyan pygmy perch, is a species of temperate perch endemic to Australia. It occurs in the coastal drainages of eastern Australia, being found in dune lakes, ponds, creeks, and swamps with plentiful vegetation to provide shelter. The waters in which it lives are often dark and acidic. It preys upon aquatic insects and their larvae, as well as planktonic crustaceans and even algae. This species can reach SL, though most do not exceed . It can also be found in the aquarium An aquarium (plural: ''aquariums'' or ''aquaria'') is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aq ... trade. References oxleyana Freshwater fish of Australia Taxonomy articles created by Polbot Fish described in 1940 {{Perciformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gallery Forest
A gallery forest is one formed as a corridor along rivers or wetlands, projecting into landscapes that are otherwise only sparsely treed such as savannas, grasslands, or deserts. The gallery forest maintains a more temperate microclimate above the river. Defined as long and narrow forest vegetation associated with rivers, gallery forests are structurally and floristically heterogeneous. The habitats of these forests differ from the surrounding landscapes because they are, for example, more nutrient-rich or moister and/or there is less chance of fires. The forests are sometimes only a few meters wide, because they depend on the water they lie along. Ecology characteristics The riparian zones in which they grow offer greater protection from fire which would kill tree seedlings. In addition, the alluvial soils of the gallery habitat are often of higher fertility and have better drainage than the soils of the surrounding landscape with a more reliable water supply at depth. As a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nymphoides
''Nymphoides'', or floatingheart, is a genus of aquatic flowering plants in the family Menyanthaceae. The genus name refers to their resemblance to the water lily '' Nymphaea''. ''Nymphoides'' are aquatic plants with submerged roots and floating leaves that hold the small flowers above the water surface. Flowers are sympetalous, most often divided into five lobes (petals). The petals are either yellow or white, and may be adorned with lateral wings or covered in small hairs. The inflorescence consists of either an umbellate cluster of flowers or a lax raceme, with internodes occurring between generally paired flowers. Species of ''Nymphoides'' are sold as aquarium plants, including the "banana plant", '' N. aquatica'' and the "water snowflake", '' N. indica''. Species native to the United States are '' N. cordata'' in the northeast and '' N. aquatica'' in the southeast. ''Nymphoides peltata'' is native to Europe and Asia, but can be found in the United States as an invasive aq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tannins
Tannins (or tannoids) are a class of astringent, polyphenolic biomolecules that bind to and precipitate proteins and various other organic compounds including amino acids and alkaloids. The term ''tannin'' (from Anglo-Norman ''tanner'', from Medieval Latin ''tannāre'', from ''tannum'', oak bark) refers to the use of oak and other bark in tanning animal hides into leather. By extension, the term ''tannin'' is widely applied to any large polyphenolic compound containing sufficient hydroxyls and other suitable groups (such as carboxyls) to form strong complexes with various macromolecules. The tannin compounds are widely distributed in many species of plants, where they play a role in protection from predation (acting as pesticides) and might help in regulating plant growth. The astringency from the tannins is what causes the dry and puckery feeling in the mouth following the consumption of unripened fruit, red wine or tea. Likewise, the destruction or modification of tann ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wallum
Wallum, or wallum country, is an Australian ecosystem of coastal south-east Queensland, extending into north-eastern New South Wales. It is characterised by flora-rich shrubland and heathland on deep, nutrient-poor, acidic, sandy soils, and regular wildfire. Seasonal changes in the water table due to rainfall may create swamps. The name is derived from the Kabi word for the wallum banksia (''Banksia aemula''). Threats Wallum, as with other coastal ecosystems, is highly threatened by the pressure for coastal development. Threats include clearing of land for residential development and pine plantations, alterations to drainage from adjacent developments, nutrients from fertilizers, changes in fire frequency, pollution from mosquito control sprays, and the introduction of weeds. Species endemic to wallum include some acid frogs – frogs adapted to living and breeding in acidic waters – such as the wallum froglet (''Crinia tinnula''), wallum rocket frog (''Litoria freycine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Byfield, Queensland
Byfield is a rural locality in the Shire of Livingstone, Queensland, Australia. In the , Byfield had a population of 301 people (53.3% male, 46.7% female, in 87 family units). Geography Byfield is located in the midst of the Byfield National Park in Central Queensland, north west of the state capital Brisbane and north of the regional centre of Rockhampton. It is within the local government area of Shire of Livingstone (between 2008 and 2013, it was within the Rockhampton Region). ''Waterpark Creek'' forms much of the north-eastern boundary. ''Sandy Creek'', a tributary of ''Waterpark'', also forms part of that boundary. History The locality's name is thought to be a corruption of Fifefield, a name shown on a 1859 sketch by pastoralist Colin Archer. Byfield State School opened its doors on 12 November 1923. At the , Byfield had a population of 275. In the , the locality of Byfield had a population of 261 people. In the , the locality of Byfield had a population of 301 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
