|Cat-eLog Data Sheet|
|Scientific Name||Chaetostoma thomsoni Regan, 1904|
|Type Locality||Villeta, Colombia.
Comment, not in original description: Villeta is located high in the Andes at 5°47'27"N, 73°58'42"W at an altitude of 4189 feet (1276 meters).
|Pronunciation||KATE oh STOW mah|
|Etymology||Greek, chaite = hair + Greek, stoma = mouth. The specific epithet, thomsoni, is named for Mr. Kay Thomson, who collected the original specimens in Villeta.|
|Size||101mm or 4" SL. Find near, nearer or same sized spp.|
|Identification||The genus Chaetostoma is not straightforward to identify, but as a general rule, the species has spines behind the gill-cover (interopercular odontodes), no plates on the abdomen, and aside from C. platyrhynchus also lack plates on the snout edge. Different from Ancistrus by not having fleshy tentacles on the snout.
Miles describes this fish as, "body and fins 'unicolor' or with little pigmentation."
|Sexing||The males have however a larger and broader head, slimmer ventral sides and disproportionately large pelvic fins. Perhaps the over-sized pelvic fins play a large role in the fertilization of the eggs. By inverting these over the clutch of eggs, they prevent the sperm cells being carried away by fast water current.|
|General Remarks||The name C. thomsoni has been misapplied in the hobby for years. It is commonly used in the hobby for a small gray Colombian Chaetostoma with dark edging to its scutes and dark spots on the head and rostrum. Miles' description is of a fish with no dark markings. In fact, looking at the drawing of the holotype (above), C. thomsoni may in fact belong to the genus Lasiancistrus and not be a Chaetostoma at all.
Another complication is that the name Chaetostoma thomsoni has been misspelled in the aquarium hobby as Chaetostoma thomasi, leading to more confusion because fish continue to be sold using the name C. thomasi. There is no such animal as C. thomasi.
|Distribution||Cool climates in Cundinamarca, Tolima, and Santander Departments, Colombia.
South America: Magdalena River basin.
Colombia Caribbean Rivers, Magdalena (click on these areas to find other species found there)
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|Furniture||Well rounded stones stacked to replicate a river bottom and provide caves.|
|Breeding Reports||There is no breeding report.|
|References||Miles, C. (1947) Los Peces Del Rio Magdalena. Editorial El Grafico, Bogota.|
|Registered Keepers||Keeping this species? Why not .
There is but a single registered keeper, view all "my cats" data.
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|Spotters||Spotted this species somewhere? Click the binoculars!
There are 2 records of this fish being seen, view them all.
|More on Chaetostoma thomsoni|
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|Last Update||2016 May 20 12:51 (species record created: 2006 Dec 24 07:33)|