NationMaster - Encyclopedia: Blackline penguinfish

Thayeria boehlkei is a species of characin fish endemic to the Amazon river basin and Araguaia river, in Peru and Brazil respectively.^[1] The species is popular with aquarium hobbyists where it is traded under a variety of common names including blackline penguinfish, blackline Thayeria, hockey-stick tetra, penguin fish and penguin tetra.^[1]^[2]^[3] Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ... Animalia redirects here. ... Typical Classes Subphylum Urochordata - Tunicates Ascidiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... Orders See text The Actinopterygii are the ray-finned fish. ... Families Acestrorhynchidae Anostomidae - Headstanders Characidae - Characins and tetras Citharinidae Ctenoluciidae - Pike-characids Curimatidae Erythrinidae - Trahiras Gasteropelecidae - Freshwater hatchetfishes Hemiodontidae Hepsetidae Lebiasinidae The Characiformes are an order of ray-finned fish, comprising the characins and their allies. ... Genera Subfamily Alestiinae - African tetras Alestes (or Brycinus) Hydrocynus Micralestes Phenacogrammus Rhabdalestes and 13 other genera Subfamily Characidiinae 8 genera Subfamily Characinae Acestrorhynchus - Pike characins Aphyocharax Boehlkea Chalceus Charax Cynodo Exodon Hasemania Hydrolycus Nematobrycon Petitella Priocharax Rhaphiodon Roeboides Thayeria ... Subfamily Crenuchinae Crenuchus Poecilocharax Subfamily Glandulocaudinae 16 genera Subfamily Iguanodectinae Iguanodectes... In biology, binomial nomenclature is the formal method of naming species. ... Genera Subfamily Alestiinae - African tetras Alestes (or Brycinus) Hydrocynus Micralestes Phenacogrammus Rhabdalestes and 13 other genera Subfamily Characidiinae 8 genera Subfamily Characinae Acestrorhynchus - Pike characins Aphyocharax Boehlkea Chalceus Charax Cynodo Exodon Hasemania Hydrolycus Nematobrycon Petitella Priocharax Rhaphiodon Roeboides Thayeria ... Subfamily Crenuchinae Crenuchus Poecilocharax Subfamily Glandulocaudinae 16 genera Subfamily Iguanodectinae Iguanodectes... A giant grouper at the Georgia Aquarium Fish are aquatic vertebrates that are typically cold-blooded; covered with scales, and equipped with two sets of paired fins and several unpaired fins. ... This article is about the river. ... The Araguaia River or, in Portuguese, Rio Araguaia is one of the major rivers of Brazil. ... For other uses, see Aquarium (disambiguation). ...

Misidentification

The species was previously misidentified as Thayeria sanctaemariae^[4] and Thayeria obliqua. T. obliqua is a superficially similar, but different species of Thayeria, while T. sanctaemariae, is a synonym of T. obliqua.^[1]

Diet

Reproduction

In captivity, this normally schooling species, forms pairs that scatters their many adhesive eggs amongst plants. Clutch size is very large and may be up to 1000 eggs, the embryos of which are black in colour^[4]^[5] The eggs hatch in ca. 20 hours and are free-swimming after 4 days.^[3] This article is about swarms in biology. ... Hours is the name of the critically acclaimed second album by Welsh rock group Funeral for a Friend. ...

In the aquarium

The species is best kept in groups, to allow the species to school, in freshwater, tropical, community aquaria with other peaceful, non-predatory fishes.^[3]^[5]^[6] This fish is tolerant of pH, but prefer acidic water for breeding. ^[6] This article is about swarms in biology. ... Community tanks are aquaria that are designed to contain more than one species of fish. ... The correct title of this article is . ...

See also

Genera Subfamily Alestiinae - African tetras Alestes (or Brycinus) Hydrocynus Micralestes Phenacogrammus Rhabdalestes and 13 other genera Subfamily Characidiinae 8 genera Subfamily Characinae Acestrorhynchus - Pike characins Aphyocharax Boehlkea Chalceus Charax Cynodo Exodon Hasemania Hydrolycus Nematobrycon Petitella Priocharax Rhaphiodon Roeboides Thayeria ... Subfamily Crenuchinae Crenuchus Poecilocharax Subfamily Glandulocaudinae 16 genera Subfamily Iguanodectinae Iguanodectes... Look up tetra- in Wiktionary, the free dictionary. ... A vast number of species of fish have been successfully kept in the home aquarium. ...

References

^ ^a ^b ^c ^d "Thayeria boehlkei". FishBase. Ed. Ranier Froese and Daniel Pauly. Apr 2007 version. N.p.: FishBase, 2007.
^ Mills D (1993) Aquarium Fish Harper Collins ISBN 0-7322-5012-9
^ ^a ^b ^c Axelrod HR, Vorderwinkler W (1995) Encyclopedia of tropical fishes. 30th edition. Tropical Fish Hobbyist Publications, USA.
^ ^a ^b McInerny D, Gerard G (1958) All about tropical fish. 2nd Edn. George Harrap & Co. London. p. 276-277.
^ ^a ^b Riehl, Rüdiger. Editor.; Baensch, HA (1996. 5th Edn.). Aquarium Atlas. Germany: Tetra Press. ISBN 3-88244-050-3.
^ ^a ^b Axelrod, Herbert, R. (1996). Exotic Tropical Fishes. T.F.H. Publications..

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