page_title: Sterba's corydoras
section_title: In the aquarium
hierarchical_section_title: Sterba's corydoras / In the aquarium
context_page_description: Sterba's corydoras is a member of the South American Corydoras genus of freshwater aquarium catfish and one of the most popular species of Corydoras due to its attractive markings. The fish is native to the Guaporé River region between Bolivia and Brazil.
  Sterba's cory is distinguishable from other Corydoras species as it has white spots on a black background on its head. It is occasionally confused with Corydoras haraldschultzi; the difference is that the latter has a pattern of black dots on a white background on the head. C. sterbai has recently become available in an albino form and a black form.
  Like many Corydoras species, Sterba's corydoras is a shoaling catfish, and thus should ideally be kept in groups of 5 or more. In the wild it can be found in Brazil and thus, wild caught fish prefer soft, acidic water. However, Sterba's corydoras is a hardy fish and tank bred specimens have adapted to a wider range of water conditions. However, like almost all fish it will not tolerate high levels of nitrates.
  Unlike some other catfish they are not good algae eaters, but are good at "cleaning up" leftover food and detritus from the substrate.
context_section_description: In captivity Corydoras sterbai readily accepts a wide variety of prepared and frozen foods. Flake food is a good staple diet (which will only be consumed once it has fallen to the bottom) as are sinking pellets or wafers. They relish live and frozen foods such as bloodworm, daphnia and mosquito larvae, but ideally should only be fed such foods once a week due to the high amount of protein in them.
  It is often problematic to feed Corydoras in aquaria with fast feeding mid-water fish such as tetras as flake and sinking pellets are consumed by such fish before they have hit the bottom and sometimes, even while lying on the substrate. However, this problem can be overcome by placing pellets and flake on the aquarium substrate in caves or under bogwood, or other such areas which are not regularly frequented by mid-water fish.
   
  The compatibility of C. sterbai is one of their main selling points as with all other Corydoras species as they are very peaceful catfish and can be kept with other peaceful fish. They should not be kept with overly aggressive bottom dwellers, particularly if there is competition over substrate space as there would be in small tanks or tanks with a large amount of "furniture". Ideal companions would be similar sized tetras or particularly, dwarf cichlids.
  Ideally Corydoras sterbai should be housed with a fine substrate such as sand or gravel in order to avoid doing damage to their delicate barbels. However, large gravel will suffice as long as it is not sharp edged. Their only other requirement is that shade be provided for them, by means of overhanging rock, large leaved plants, arching bogwood or caves.
  Breeding is not too difficult. A tank with dimensions 18″ x 12″ x 12″ (10 US Gallon) is recommended. The breeding ratio that should be kept is 2 males per female. Good diet together with repeated water changes and drops of temperature are usually sufficient. However, raising the fry is not easy due to its high sensitivity.
  Occasionally problems can arise while transporting these fish as they are capable of secreting a chemical toxin when stressed or overcrowded. For this reason they are never shipped with other fish.
caption: Corydoras sterbai
exif: {"Image Make": "CASIO", "Image Model": "QV-5700", "Image Orientation": "0", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Ver1.00", "Image DateTime": "2006:01:07 21:00:10", "Image YCbCrPositioning": "Centered", "Image ExifOffset": "262", "Image PrintIM": "[80, 114, 105, 110, 116, 73, 77, 0, 48, 50, 53, 48, 0, 0, 0, 2, 0, 1, 0, 22, 0, 22, 0, 2, 1, 0, 0, 0, 1, 0, 5, 0, 0, 0, 1, 1, 0, 0, 0, 0]", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "1252", "Thumbnail JPEGInterchangeFormatLength": "4049", "EXIF ExposureTime": "103509/1000000", "EXIF FNumber": "2", "EXIF ExposureProgram": "Program Normal", "EXIF ExifVersion": "0220", "EXIF DateTimeOriginal": "2006:01:07 21:00:10", "EXIF DateTimeDigitized": "2006:01:07 21:00:10", "EXIF ComponentsConfiguration": "YCbCr", "EXIF CompressedBitsPerPixel": "471859/153600", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "2", "EXIF MeteringMode": "Pattern", "EXIF LightSource": "Unknown", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "1697/100", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "Uncalibrated", "EXIF ExifImageWidth": "800", "EXIF ExifImageLength": "570", "Interoperability InteroperabilityIndex": "", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "EXIF InteroperabilityOffset": "1128", "EXIF FileSource": "Digital Camera", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF DigitalZoomRatio": "1", "EXIF FocalLengthIn35mmFilm": "82", "EXIF SceneCaptureType": "Standard", "EXIF GainControl": "Low gain up", "EXIF Contrast": "Normal", "EXIF Saturation": "Normal", "EXIF Sharpness": "Normal"}