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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) > Siluriformes (Catfishes) > Callichthyidae (Callichthyid armored catfishes) > Corydoradinae
Etymology: tenebrosum:Name 'tenebrosum' from the Latin noun 'tenebrae' and suffix 'ōsum', meaning 'darkness, gloom', in allusion to the powerful toxin released by the new species under stress.
Environment: milieu / climate zone / depth range / distribution range Ecology
Maturity: Lm? range ? - ? cm Max length : 5.5 cm SL male/unsexed; (Ref. 137472)
Short description Identification keys | Morphology | Morphometrics
Dorsalspines (total): 2; Dorsalsoft rays (total): 7 - 9; Analsoft rays: 5 - 6. This species is distinguished by the following set of characters: ventral surface of trunk with small- to relatively large-sized coalescent platelets, forming a typical mosaic-like pattern; small, whitish to brownish yellow or pale yellow/beige blotches on the predorsal portion of body; two or three longitudinal dark brown or black stripes on flanks; fewer pale blotches on the body; large, smoothly arched dark brown or black patch present, extending from the anterior portion of parieto-supraoccipital towards the region of interopercle, transversally crossing the orbit and forming a typical mask-like blotch; mosaic-like pattern of plates entirely or almost entirely covering the ventral surface of trunk (Ref. 137472). Body shape (shape guide): short and / or deep; Cross section: flattened.
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Tencatt, L.F.C., W.M. Ohara, V.D. Carvalho, S. Grant and M. Britto, 2025. Two exquisite new species of Hoplisoma (Siluriformes: Callichthyidae) from the rio Tapajós basin, Brazil, with a discussion on the morphology of the mesethmoid within Corydoradinae. Neotropical Ichthyology 23(1):e240100. (Ref. 137472)
IUCN Red List Status (Ref. 130435: Version 2025-2)
