Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Characiformes (Characins) >
Crenuchidae (South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335); noelkempffi: Name 'noelkempffi' in honor of Professor Noel Kempff Mercado (1924-1986), a Bolivian biologist and environmentalist renowned, for his contributions to the study and conservation of Bolivia's biodiversity.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
South America: Bolivia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.4 cm SL male/unsexed; (Ref. 138784)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 8 - 9; Anal soft rays: 6. This species is distinguished from its congeners by the following set of characters: presence of a broad (at least one scale wide) and conspicuous dark midlateral stripe, markedly darker than the vertical bars (when present), extending continuously from posterior margin of the opercle to the base of the caudal fin; absence of a distinct humeral blotch, either rounded or vertically elongated; four horizontal scale rows above the lateral line; 12 circumpeduncular rows of scales; parietal branch of the supraorbital canal present; clearly visible basicaudal dark spot located somewhat posterior to the end of the longitudinal dark stripe; complete lateral line; presence of adipose fin; presence of the parietal branch of the supraorbital laterosensory canal; dark lateral stripe, which occupies approximately one scale row; 31-32 pored lateral-line scales; absence of small dark spot immediately anterior to the insertion of the first dorsal-fin ray and, when present, by having 11-16 vertical bars; reddish-brown hue on the paired, dorsal and caudal fins of majority of the specimens; presence of postcleithrum 1 and, when present, by having 11-16 vertical bars; presence of scales on the isthmus; and five rows of scales below the lateral line (Ref. 138782).
Body shape (shape guide): elongated.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oliveira-Silva, L., K. Or, A. Zanata and S.A. Schaefer, 2026. Isolated in the highlands, found in the museum: a new species of Characidium (Crenuchidae) from a Bolivian National Park with a CT scan revealing features. J. Fish Biol. 1-13. (Ref. 138784)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Threat to humans
Harmless
Human uses
Fisheries: of no interest
Tools
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Estimates based on models
Phylogenetic diversity index (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01023 (0.00450 - 0.02327), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Trophic level (Ref. 69278) |
3.4 ±0.3 se; based on size and trophs of closest relatives |
Fishing Vulnerability (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |