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 Giant danio, Devario aequipinnatus
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| Cyprinus devario Hamilton, 1822 |
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D. The Giant Danio ( Devario aequipinnatus) is a Tropical Fish belonging to the minnow family ( Cyprinidae) Chordates ( Phylum Chordata) are a group of Animals that includes the Vertebrates together with several closely related Invertebrates The Actinopterygii (the plural form of Actinopterygius) comprise the class of the ray-finned fishes. The Cypriniformes are an order of ray-finned fish, including the Carps Minnows Loaches and relatives The family Cyprinidae, from the Ancient Greek κυπρῖνος ( kuprīnos "carp" consists of the Carps The danionins are a group of small Minnow -type fish belonging to the family Cyprinidae. Johann Jakob Heckel ( January 23, 1790 - March 1, 1857) was an Austrian Taxidermist, Zoologist, and Ichthyologist In biology a type is that which fixes a name to a Taxon. Depending on the nomenclature code which is applied to the organism in question a type may be a specimen Dr Francis Buchanan, later known as Francis Hamilton but often referred to as Francis Buchanan-Hamilton ( February 15, 1762 - June 15 acrostomus |
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The genus Devario comprise of some Danionins familiar to aquarists. This species from Myanmar may be another known Devario species but as of yet nothing can be confirmed This stunning newly discovered species of freshwater fish from Myanmar may be another known Devario species but as of yet nothing can be confirmed In Scientific nomenclature, synonyms are different Scientific names used for a single Taxon. This article is about the British zoologist Francis Day For the American artist of the same name see Francis Day (artist. Albrecht Karl Ludwig Gotthilf Günther FRS (also Albert Charles Lewis Gotthilf Gunther) October 3, 1830 – February 1 Henry Weed Fowler ( March 23, 1878 – June 21, 1965) was an American Zoologist born in Holmesburg Pennsylvania Jacques Pellegrin ( 12 June 1873 - 12 August 1944) was a French zoologist. The danionins are a group of small Minnow -type fish belonging to the family Cyprinidae. Generally (but not all) larger fish than Danios, they have short barbels (if present at all), and generally have deeper bodies than Danio species, with species having vertical stripes present (as well as horizontal). The Danio genus comprises many of the species of Danionins familiar to aquarists In size they range from 5 cm/ 2 in) to 15 cm/ 6 in). A centimetre ( American spelling: centimeter, symbol cm) is a unit of Length in the Metric system, equal to one hundredth Inches redirects here To see the Les Savy Fav album see Inches. A centimetre ( American spelling: centimeter, symbol cm) is a unit of Length in the Metric system, equal to one hundredth Inches redirects here To see the Les Savy Fav album see Inches.
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Taxonomy
Most species that were formerly within the Danio genus such as the giant danio have now been reclassified into the Devario genus. The Giant Danio ( Devario aequipinnatus) is a Tropical Fish belonging to the minnow family ( Cyprinidae) [1] In addition Devario acuticephala, Devario shanensis and Devario sondhii were also regarded at one time as being in the former genus Brachydanio. Devario acuticephala is a small Danionin from Manipur in India. See also Danionins * Devarios See also Danionins * Devarios
Devario chankaeinsis, the Khanka Spiny Bitterling, is now renamed Achielognargus chankaeinsis. Devario asmussii, the Russian Bitterling, has now renamed Acanthorhodeus asmussii. The Russian bitterling ( Acanthorhodeus asmussii) or spiny bitterling is a Temperate Freshwater Fish belonging to the Acheilognathinae
Characteristics
They are native to the fresh water rivers and streams of southeast Asia, but many species are brightly coloured, and are available as aquarium fish worldwide. A number of the species have only been recently discovered, in remote inland areas of Laos and Myanmar and do not yet have scientific names.
They generally do not live for more than about two to three years and are probably annual fish in the wild although the larger species may live for up to 5 years.
In the wild, these fish consume various small aquatic insects, crustaceans, worms, as well as, in the case of fry plankton. Insects ( Class Insecta) are a major group of Arthropods and the most diverse group of Animals on the Earth with over a million described Structure of crustaceans As Arthropods crustaceans have a stiff Exoskeleton, which must be shed to allow the animal to grow ( Ecdysis or molting A worm is a common name given to a diverse group of invertebrate animals that have a long soft body and no legs Plankton consist of any drifting Organisms ( Animals Plants Archaea, or Bacteria) that inhabit the Pelagic zone of
In the aquarium
The care of members of the genus Devario are rather similar and easily generalized. They are generally easy to moderate in difficulty to keep.
All of these fish are primarily surface feeders. They are omnivorous in the aquarium and will accept a wide variety of foods, though flake food is appropriate. Living in aquaria, live/frozen flaked foods are suitable, especially brine shrimp and sinking tablets. Brine shrimp are a species of aquatic Crustaceans of the Genus Artemia. When conditioning danios for breeding, it's advisable to feed them plenty of fresh foods.
Although boisterous and liable to chase each other and other fish, they are good community fish and will not generally attack each other or other fish, although they occasionally nip fins, more by accident than design and will, like most fish, eat eggs and any fish small enough to fit into their mouths, in the case of the larger devarios this could include fish such as small tetras. Tetra are species of small South American freshwater Fish, belonging to the family Characidae and to its former subfamilies Alestiidae (the
They are best kept in a tank long enough for their active swimming, preferably with a current from a power filter (or at least airstone) as they often live in fast flowing streams in the wild. Generally this also results in them being sub tropical with cooler temperatures. They are good jumpers and a tight fitting lid is recommended
Schooling fish, they prefer to be in groups of six or more. Devario species prefer water with a 6. 0–8. 0 pH, a water hardness of up to 5. pH is the measure of the acidity or alkalinity of a Solution. 0–19. 0 dGH, and a temperature range of 68–80 °F (18–24 °C), the lower end of the temperature range is ideal. Degrees of General Hardness (dGH is a unit of water hardness, specifically of General Hardness Fahrenheit is a temperature scale named after Daniel Gabriel Fahrenheit (1686–1736 a German Physicist who proposed it in 1724 The Celsius Temperature scale was previously known as the centigrade scale.
Breeding
Some species of Devario, such as the giant danio are among the easiest aquarium fish to breed. The Giant Danio ( Devario aequipinnatus) is a Tropical Fish belonging to the minnow family ( Cyprinidae) Other species such as Devario pathirana are far harder to spawn. The Barred Danio ( Devario pathirana) is a Fish belonging to the minnow family ( Cyprinidae) All scatter their eggs over the substrate. The eggs are adhesive and hatch within 2-3 days. Eggs will be eaten enthusiastically unless protected by a heavy planting eg Java moss or a spawning mop. Java Moss is a Moss belonging to the Hypnaceae family. Native to Southeast Asia it is commonly used in freshwater aquariums.
External links
- Danios and Devarios. Danios and devarios website. Retrieved on 2005-10-01. Year 2005 ( MMV) was a Common year starting on Saturday (link displays full calendar of the Gregorian calendar. Events 331 BC - Alexander the Great defeats Darius III of Persia in the Battle of Gaugamela.
- Clarke, Matt (2005) - A fishkeeper's guide to danios and devarios.. Article on danionins at Practical Fishkeeping's website. Retrieved on 2005-10-01. Year 2005 ( MMV) was a Common year starting on Saturday (link displays full calendar of the Gregorian calendar. Events 331 BC - Alexander the Great defeats Darius III of Persia in the Battle of Gaugamela.
See also
- Danionins - full details of all fish related to the Devarios
- Danios - Details of the species within the genus Danio
References
- ^ Fang, Fang (2003). The danionins are a group of small Minnow -type fish belonging to the family Cyprinidae. The Danio genus comprises many of the species of Danionins familiar to aquarists The Danio genus comprises many of the species of Danionins familiar to aquarists "Phylogenetic Analysis of the Asian Cyprinid Genus Danio (Teleostei, Cyprinidae)". Copeia (4): 714–728. Copeia is a quarterly published Periodical pertaining to ichthyological and herpetological subjects
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