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Clean-up Crew
The clean-up crew is the term that has been used by many aquarists and vendors since the late 1980s to refer to various small animals commonly sold for use in keeping the reef aquarium clear of pest algae, detritus and parasites. Among the most popular have long been blue-legged hermit crabs, scarlet hermit crabs, emerald crabs and various snails. Other commonly used animals include limpets, sea hares, sea urchins, brittle stars, algae-eating combtooth blennies, neon gobies, reef lobsters, cleaner shrimp, mysid shrimp, copepods, ostracods, isopods and amphipods. Even peppermint shrimp that feed on pest Aiptasia anemones are often included. Sometimes it is used for the shallow sediment-dwelling animals that live in the deep sand bed of marine aquariums or reef aquariums such as sand sifting starfish, spaghetti worms, bristleworms and flatworms. Clean-up crews have also more recently been used in freshwater aquariums to control algae, detritus and pest snails. These often inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reef Aquarium
A reef aquarium or reef tank is a marine aquarium that prominently displays live corals and other marine invertebrates as well as fish that play a role in maintaining the tropical coral reef environment. A reef aquarium requires appropriately intense lighting, turbulent water movement, and more stable water chemistry than fish-only marine aquaria, and careful consideration is given to which reef animals are appropriate and compatible with each other. Components Reef aquariums consist of a number of components, in addition to the livestock, including: *Display tank: The primary tank in which the livestock are kept and shown. *Stand: A stand allows for placement of the display tank at eye level and provides space for storage of the accessory components. *Sump: An accessory tank in which mechanical equipment is kept. A remote sump allows for a clutter-free display tank. *Refugium: An accessory tank dedicated to the cultivation of beneficial macroalgae and microflora/fauna. The re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphipods
Amphipoda is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. Amphipods range in size from and are mostly detritivores or scavengers. There are more than 9,900 amphipod species so far described. They are mostly marine animals, but are found in almost all aquatic environments. Some 1,900 species live in fresh water, and the order also includes the terrestrial sandhoppers such as ''Talitrus saltator''. Etymology and names The name ''Amphipoda'' comes, via New Latin ', from the Greek roots 'on both/all sides' and 'foot'. This contrasts with the related Isopoda, which have a single kind of thoracic leg. Particularly among anglers, amphipods are known as ''freshwater shrimp'', ''scuds'', or ''sideswimmers''. Description Anatomy The body of an amphipod is divided into 13 segments, which can be grouped into a head, a thorax and an abdomen. The head is fused to the thorax, and bears two pairs of antennae and one pair of ses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asellus
''Asellus'' is a genus of isopod crustaceans in the family Asellidae. Species Asellus is divided into three subgenera which contain the following species: Asellus Geoffroy, 1764 *'' Asellus alaskensis'' Bowman & Holmquist, 1975https://biostor.org/pdfproxy.php?url=https%3A%2F%2Farchive.org%2Fdownload%2Fbiostor-81720%2Fbiostor-81720.pdf *'' Asellus amamiensis'' Matsumoto, 1961 *''Asellus aquaticus'' (Linnaeus, 1758) *'' Asellus balcanicus'' Karaman, 1952 *'' Asellus birsteini'' Levanidov, 1976 *'' Asellus crypticus'' Collinge, 1945 *'' Asellus epimeralis'' Birstein, 1947 *'' Asellus ezoensis'' Matsumoto, 1962 *'' Asellus hilgendorfii'' Bovallius, 1886 *''Asellus hyugaensis'' Matsumoto, 1960 *'' Asellus incisus'' Van Name, 1936 *'' Asellus kumaensis'' Matsumoto, 1960 *'' Asellus latifrons'' Birstein, 1947 *'' Asellus levanidovorum'' Henri & Magniez *''Asellus meridionalis'' Racovitza, 1919 *''Asellus monticola'' Birstein, 1932 *''Asellus musashiensis'' Matsumoto, 1961 *''Asellus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyalella
''Hyalella'' is a genus of amphipods found in the Americas. They are mainly found in freshwater habitats. Species The following species are recognised in the genus ''Hyalella'': *'' Hyalella anophthalma'' Ruffo, 1957 *'' Hyalella araucana'' Grosso & Peralta, 1999 *'' Hyalella armata'' (Faxon, 1876) *'' Hyalella azteca'' (Saussure, 1858) *'' Hyalella bonariensis'' Bond-Buckup, Araujo & Santos, 2008 *'' Hyalella brasiliensis'' Bousfield, 1996 *'' Hyalella caeca'' Pereira, 1989 *'' Hyalella cajasi'' Alonso & Jaume, 2017 *'' Hyalella caribbeana'' Bousfield, 1996 *'' Hyalella carstica'' Bastos-Pereira & Bueno, 2012 *'' Hyalella castroi'' Gonzalez, Bond-Buckup & Araujo, 2006 *'' Hyalella catarinensis'' Reis & Bueno in Reis, Penoni & Bueno, 2020 *'' Hyalella cenotensis'' Marrón-Becerra, Hermoso-Salazar & Solís-Weiss, 2014 *'' Hyalella cheyennis'' Bueno, Oliveira & Wellborn, 2019 *'' Hyalella chiloensis'' Gonzalez & Watling, 2001 *'' Hyalella costera'' Gonzalez & Watling, 2001 *'' H ... [...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, 1970 *'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crayfish
Crayfish are freshwater crustaceans belonging to the clade Astacidea, which also contains lobsters. In some locations, they are also known as crawfish, craydids, crawdaddies, crawdads, freshwater lobsters, mountain lobsters, rock lobsters, mudbugs, baybugs or yabbies. Taxonomically, they are members of the superfamilies Astacoidea and Parastacoidea. They breathe through feather-like gills. Some species are found in brooks and streams, where fresh water is running, while others thrive in swamps, ditches, and paddy fields. Most crayfish cannot tolerate polluted water, although some species, such as ''Procambarus clarkii'', are hardier. Crayfish feed on animals and plants, either living or decomposing, and detritus. The term "crayfish" is applied to saltwater species in some countries. Terminology The name "crayfish" comes from the Old French word ' (Modern French '). The word has been modified to "crayfish" by association with "fish" (folk etymology). The largely American ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Aquarium
A freshwater aquarium is a receptacle that holds one or more freshwater aquatic organisms for decorative, pet-keeping, or research purposes. Modern aquariums are most often made from transparent glass or acrylic glass. Typical inhabitants include fish, plants, amphibians, and invertebrates, such as snails and crustaceans. Freshwater fish may be either coldwater or tropical species. Although freshwater aquariums can be set up as community tanks, coldwater and tropical fish are generally not mixed due to incompatibilities in temperature requirements. Coldwater aquariums house goldfish and other species that do not require a heating apparatus. Warmer temperatures would actually increase their metabolism and shorten their lifespan.Johnson, E. L., & Hess, R. E. (2006). ''Fancy goldfish: A complete guide to care and collecting'', Weatherhill: Shambala Publications, Inc. For a tropical fish tank, maintaining a warm environmental temperature ranging between 75 and 80 °F (24 to 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flatworm
The flatworms, flat worms, Platyhelminthes, or platyhelminths (from the Greek πλατύ, ''platy'', meaning "flat" and ἕλμινς (root: ἑλμινθ-), ''helminth-'', meaning "worm") are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates. Unlike other bilaterians, they are acoelomates (having no body cavity), and have no specialized circulatory and respiratory organ (anatomy), organs, which restricts them to having flattened shapes that allow oxygen and nutrients to pass through their bodies by diffusion. The digestive cavity has only one opening for both ingestion (intake of nutrients) and egestion (removal of undigested wastes); as a result, the food cannot be processed continuously. In traditional medicinal texts, Platyhelminthes are divided into Turbellaria, which are mostly non-parasitic animals such as planarians, and three entirely parasitic groups: Cestoda, Trematoda and Monogenea; however, since the turbellarians have since been prove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristleworm
Polychaeta () is a paraphyletic class of generally marine annelid worms, commonly called bristle worms or polychaetes (). Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called chaetae, which are made of chitin. More than 10,000 species are described in this class. Common representatives include the lugworm (''Arenicola marina'') and the sandworm or clam worm ''Alitta''. Polychaetes as a class are robust and widespread, with species that live in the coldest ocean temperatures of the abyssal plain, to forms which tolerate the extremely high temperatures near hydrothermal vents. Polychaetes occur throughout the Earth's oceans at all depths, from forms that live as plankton near the surface, to a 2- to 3-cm specimen (still unclassified) observed by the robot ocean probe ''Nereus'' at the bottom of the Challenger Deep, the deepest known spot in the Earth's oceans. Only 168 species (less than 2% of all polychaetes) are known from fresh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terebellidae
The Terebellidae is a marine family of polychaete worms, of which the type taxon is ''Terebella'', described by Carl Linnaeus in his 1767 12th edition of ''Systema Naturae''. Characteristics Most terebellids live in burrows or crevices and are often of large size, ranging up to 150 millimetres in length and 15 millimetres in width. The numerous, very long tentacles which radiate from near the mouth are used for finding and collecting food particles from the sediment surface. The tentacles are not retractable as is the case in the ampharetids. They have plump anterior bodies and numerous segments in their long, tapered posterior bodies, whereas ampharetids are more compact. They have branched gills laterally on up to three anterior chaetigers but in the subfamily Thelepodinae the gills are numerous simple filaments. The mid-body chaetigers are in double rows in the subfamily Terebellinae. In the subfamily Polycirrinae, the gills are absent and the prostomium is expanded as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astropecten Polyacanthus
''Astropecten polyacanthus'', the sand sifting starfish or comb sea star, is a sea star of the family Astropectinidae. It is the most widespread species in the genus ''Astropecten'', found throughout the Indo-Pacific region. The armspread is up to . The specific epithet "polyacanthus" comes from the Latin meaning "many thorned".Astropecten polyacanthus - Comb seastar JulianRocks.net. Retrieved 2012-04-07. Description The upper surface of the comb star is a dark purplish colour, while the underside is orange. On the upper surface paxillae (Latin, "little stakes"), little pillars with flattened summits, are cream, grey or brown, the colours sometimes making a chevron pat ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Aquarium
A marine aquarium is an aquarium that keeps ocean, marine plants and animals in a contained environment. Marine aquaria are further subdivided by hobbyists into fish only (FO), fish only with live rock (FOWLR), and reef aquarium, reef aquaria. Fish only tanks often showcase large or aggressive marine fish species and generally rely on mechanical and chemical filtration. FOWLR and reef tanks use live rock, a material composed of coral skeletons harboring beneficial nitrogen waste metabolizing bacteria, as a means of more natural biological filtration. Marine fishkeeping is different from its freshwater counterpart because of the fundamental differences in the constitution of saltwater and the resulting differences in the adaptation of its inhabitants. A stable marine aquarium requires more equipment than freshwater systems, and generally requires more stringent water quality monitoring. The inhabitants of a marine aquarium are often difficult to acquire and are usually more expensi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
