Cat-eLog Right Arrow Trichomycteridae Right Arrow Tridentinae Right Arrow Tridensimilis

Jump to next section Cat-eLog Data Sheet
Scientific NameTridensimilis brevis  (Eigenmann & Eigenmann, 1889)
Common NamesGlass Candiru
Dwarf Parasitic Catfish, Glass Parasitic Catfish
Type LocalityTabatinga, Amazonas, Brazil.
Synonym(s)Tridens brevis
EtymologyTridensimilis: From the Latin similis, meaning equal; this genus was named after its similarity to the trichomycterid genus Tridens (from the Greek tri, meaning three and dens, meaning teeth; in reference to the number of interopercular spines). 
Jump to next section Species Information
Size 28mm or 1.1" SL. Find near, nearer or same sized spp.
IdentificationMinute species of Catfish, usually actively swimming in the water column, at other times resting on plants or substrate. Tiny barbels visible on close examination (particularly when feeding). Body is remarkably transparent, the organs are enclosed in a silvery sac, although the stomach contents and other areas of the alimentary tract may be visible.
There are two dark pigment spots on the body, one in the humeral area, the other on the caudal peduncle (this spot actually appear to be made up of pigmented skeletal elements as opposed to epidermal pigment).
SexingUnknown, although females may show ovaries through body wall when gravid.
Jump to next section Habitat Information
DistributionThis particular specimen originated in a shipment of Corydoras pygmaeus from Peru. The genus would appear to be widely distributed across the Amazon region, into the Maracaibo basin of Venezuela.
Amazon (click on these areas to find other species found there)
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pH5.6 - 7.6
Temperature21.0-30.0°C or 69.8-86°F (Show species within this range)
Other ParametersLarge water changes not appreciated, very regular small changes optimal. Strong flow not required.
Jump to next section Husbandry Information
FeedingSmall Live Crustaceans, Worms, Insect Larvae taken eagerly. Dry food ignored. Incipient parasitism.
FurnitureNot important. Sand or bare base probably best.
CompatibilityComplex and variable. No problems with small characins, but there is some evidence that they are opportunistically lepidophagous on slightly larger fish under some circumstances. It has been observed that they will attack large ultra peaceful fish e.g. Doradids. There are no intraspecific compatibility problems observed, a larger group needs to be assembled to gather more information.
BreedingCurrently unknown.
Jump to next section Further Information
ReferencesProceedings of the California Academy of Sciences (Series 2) v. 2, pp 54.
Registered Keepers(1) Brooklamprey (k: 20), who also notes: "These fish have been observed feeding on Beefheart flake food.", (2) amiidae, (3) Junttis.

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Breeding ReportsNone.
Article - CotM 2010 September
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Last Update2014 Jun 18 09:22 (species record created: 2002 Jan 07 00:00)