|
Refugium (fishkeeping)
In fishkeeping, a refugium is an appendage to a marine, brackish, or freshwater fish tank that shares the same water supply. It is a separate sump, connected to the main show tank. It is a " refugium" in the sense that it permits organisms to be maintained that would not survive in the main system, whether food animals, anaerobic denitrifying bacteria, or photosynthesizers. For some applications water flow is limited in order to protect plants or animals that require slow flow. The refugium light cycle can be operated opposite to the main tank, in order to keep total system pH more stable (due to the uptake of acid-forming CO2 by photosynthesis occurring in the refugium during its "daylight" hours). One volume guideline for a refugium is 1:10 main tank volume. A refugium may be used for one or more purposes such as denitrification, nutrient export, plankton production, circulation, surface agitation to improve oxygen exchange with the atmosphere or even aesthetic purposes. Con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Itty Bitty Refugium
Itty may refer to: * Itty Achudan, a 17th-century Ayurvedic physician * '' Itty E'', a United States Navy patrol vessel * Johncy Itty, former bishop of the Episcopal Diocese of Oregon * Itty, a small alien creature that accompanied Green Lantern in the Bronze Age {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anubias
''Anubias'' is a genus of aquatic and semi-aquatic flowering plants in the family Araceae, native to tropical central and western Africa. They primarily grow in rivers and streams, but can also be found in marshes. They are characterized by broad, thick, dark leaves that come in many different forms. The genus was revised in 1979 and since then its botanical nomenclature, nomenclature has been stable. Species can be determined by using mostly characteristics of the inflorescence. Because of the often shady places where the plants grow, the genus was named after the Anubis, Egyptian god Anubis, the god of the afterlife. The genus was first described in 1857 by Heinrich Wilhelm Schott, with ''Anubias afzelii, A. afzelii'' as its type species. Reproduction and uses ''Anubias'', most notably the varying forms of ''Anubias barteri, A. barteri'', are commonly used in aquariums, usually attached to rocks or bogwood. In contrast to most plants, ''Anubias'' generally prefer subdued light ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gammarus
''Gammarus'' is an amphipod crustacean genus in the family Gammaridae. It contains more than 200 described species, making it one of the most species-rich genera of crustaceans. Different species have different optimal conditions, particularly in terms of salinity, and different tolerances; '' Gammarus pulex'', for instance, is a purely freshwater species, while '' Gammarus locusta'' is estuarine, only living where the salinity is greater than 25 ‰. Species of ''Gammarus'' are the typical " scuds" of North America and range widely throughout the Holarctic. A considerable number are also found southwards into the Northern Hemisphere tropics, particularly in Southeast Asia. Species The following species are included: Four new species were found in 2018 on the Tibetan Plateau. Four more new species were described from the Chihuahuan Desert in 2021. *'' Gammarus abscisus'' G. Karaman, 1973 *'' Gammarus abstrusus'' Hou, Platvoet & Li, 2006 *'' Gammarus acalceolatus'' Pinkster, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moina
''Moina'' is a genus of crustaceans within the family Moinidae. The genus was first described by William Baird (physician), W. Baird in 1850. They are referred to as water fleas, but are related to the much larger ''Daphnia magna'' and the larger ''Daphnia pulex''. This genus demonstrates the ability to survive in waters containing Hypoxia (environmental), low oxygen levels, high salinity, and other impurity, impurities, including Dry lake, salt pans, and commonly eutrophication. An example of such an extreme habitat is the highly saline Makgadikgadi Pans of Botswana, which supports prolific numbers of ''Moina belli''. The ''Moina'' are known to be found in various types of bodies of water in Eurasia where new found research indicates that there is an increased presence of biodiversity in regions of Northern Eurasia, Japan and China. According to genetic data, the genus ''Moina'' is divided into two big faunistic groups: European-Western Siberian and Eastern Siberian-Far Eastern, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daphnia
''Daphnia'' is a genus of small planktonic crustaceans, in length. ''Daphnia'' are members of the Order (biology), order Anomopoda, and are one of the several small aquatic crustaceans commonly called water fleas because their Saltation (gait), saltatory swimming style resembles the movements of fleas. ''Daphnia'' spp. live in various aquatic environments ranging from acidic swamps to Fresh water, freshwater lakes and ponds. The two most commonly found species of ''Daphnia'' are ''Daphnia pulex, D. pulex'' (small and most common) and ''Daphnia magna, D. magna'' (large). They are often associated with a related genus in the order Cladocera: ''Moina'', which is in the Moinidae group instead of the Daphniidae, and is much smaller than ''D. pulex'' (roughly half the maximum length). Appearance and characteristics The body of a ''Daphnia'' species is usually long, and is divided into Segmentation (biology), segments, although this division is not visible. The hea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cherry Shrimp
''Neocaridina davidi'', also known as the cherry shrimp, is a freshwater shrimp native to Taiwan, east of China, the Korea, Korean Peninsula, and Vietnam, that is sold globally in the Aquarium, aquatic pet trade. They are omnivores, and their natural habitat in these regions include inland water bodies such as lakes, ponds, rivers, and streams. ''N. davidi'' is also able to tolerate a wide range of environmental conditions, and as a result of this is also becoming invasive in thermally polluted waterways of Japan, the United States, Poland, and Germany. It is thought that the release of captive shrimp has led to their presence in these environments. Their natural coloration, or wild type, is a mottled brown, but ''N. davidi'' has been selectively bred to produce a diverse array of color morphs including red, orange, yellow, green, blue, violet, white, clear, and more. The popularity of the red morph has led to ''N. davidi'' also being known as "cherry shrimp". ''N. davidi'' do no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physa
''Physa'' is a genus of small, left-handed or sinistral, air-breathing freshwater snails, aquatic pulmonate gastropod molluscs in the subfamily Physinae of the family Physidae.MolluscaBase eds. (2021). MolluscaBase. Physa Draparnaud, 1801. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=181551 on 2021-06-26 These snails eat algae, diatoms and detritus. Anatomy Members of the freshwater pulmonate family Physidae possess a complex of muscles that is unique amongst gastropods. This complex was given the name "physid musculature". The physid musculature has two main components, the physid muscle ''sensu stricto'' and the fan muscle. The physid musculature is responsible for a unique ability of physids to rapidly flick their shells from side to side — a reaction that frequently enables them to escape predation. Shell description These small snails, like all the species in the family Physidae, have shells that are sin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planorbidae
Planorbidae, common name the ramshorn snails or ram's horn snails, is a family (biology), family of air-breathing freshwater snails, Aquatic animal, aquatic pulmonate gastropod Mollusca, molluscs. Unlike most molluscs, the blood of ram's horn snails contains iron-based hemoglobin instead of copper-based hemocyanin. As a result, planorbids are able to breathe oxygen more efficiently than other molluscs. The presence of hemoglobin gives the body a reddish colour. This is especially apparent in albino animals. Being air breathers like other Panpulmonata, planorbids do not have gills, but instead, have a lung. The foot and head of planorbids are rather small, while their thread-like tentacles are relatively long. Many of the species in this family have coiled shells that are planispiral, in other words, the shells are more or less coiled flat, rather than having an elevated Spire (mollusc), spire as is the case in most gastropod shells. Although they carry their shell in a way that m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melanoides Tuberculata
The red-rimmed melania (''Melanoides tuberculata''), also known as the Malayan livebearing snail or Malayan/Malaysian trumpet snail (often abbreviated to MTS by aquarists), is a species of freshwater snail with an operculum, a parthenogenetic, aquatic gastropod mollusk in the family Thiaridae. The common name comes from the presence of reddish spots on their otherwise greenish-brown shells. The species name is sometimes spelled ''M. tuberculatus'', but this is incorrect because '' Melanoides'' Olivier, 1804 was clearly intended to be feminine because it was combined with the feminine specific epithet ''fasciolata'' in the original description."Genus: ''Melanoides''" ''Molluscs of central Europe'', accessed 19 April 2011. This species is native to northern Africa and southern Asia, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fontinalis
''Fontinalis'' is a genus of submerged aquatic mosses belonging to the subclass Bryidae. These mosses are also called willow moss, fountain moss, brook moss and water moss. The genus is widespread in the Northern Hemisphere and includes both species that occur in still water and in flowing water. Biology Fontinalis is characterized by its dark green color, and irregularly branching stems covered with small to large glossy, sharply ridged leaves. However, different species of it may be characterized by different traits—'' Fontinalis antipyretica'' has keeled leaves, while '' Fontinalis novae-angliae'' has small teeth towards the tip and rolled leaves. Other variations are seen in size and curvature of the branches. Bruce Allen describes the genus's physical characteristics as such. "The axillary hairs are remarkably long, to over 900 μm. The leaves have a multistratose basal region that has been interpreted as a rudimentary costa. The perichaetial leaves are usually lacerate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Java Moss
Java moss is a common name for multiple plants and may refer to: *'' Taxiphyllum barbieri'' *'' Vesicularia dubyana'' Hypnaceae {{Short pages monitor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cladophora
''Cladophora'' is a genus of reticulated filamentous green algae in the class Ulvophyceae. They may be referred to as reticulated algae, branching algae, or blanket weed. The genus has a worldwide distribution and is harvested for use as a food and medicine. Description and appearance ''Cladophora'' coloring is bright green which reflects the chlorophyll a, and chlorophyll b, which are similar to higher plant ratios and that also contains β-carotene and xanthophylls.Michalak, I., Messyasz, B. Concise review of Cladophora spp.: macroalgae of commercial interest. J Appl Phycol 33, 133–166 (2021). https://doi.org/10.1007/s10811-020-02211-3 The thallus branches are smaller than the main axis, dichotomous, rough in texture, and have narrow tips. Temperature, water currents and waves affect their metabolism and morphology, and branching patterns. At 15–20 °C branches appear alternate, they can also appear completely absent in temperatures below 25 °C. ''Cladophora'' form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
