Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Thayeriinae
Etymology: Inpaichthys: It is a dedication name; see www.aqua.terra-net.de; from a Brazilian institution about Indian tribes.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; pelagic. Tropical
South America: Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.2 cm SL male/unsexed; (Ref. 138318); 3.8 cm SL (female)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 9; Anal soft rays: 19 - 21; Vertebrae: 34. Thisi species is distinguished from all its congeners by the following characters: autapomorphic presence of a well-defined, relatively broad oblique dark ventrolateral stripe on body, running approximately from end of pectoral fin rays to base of middle caudal-fin rays, and continuing straight onto the tip of the middle caudal-fin rays (vs. no well-defined longitudinal stripe, or dark lateral stripe never oblique); differs from I. nambiquara, I. parauapiranga by the absence of humeral blotch (vs. two in I. parauapiranga, one in I. nambiquara); differs from I. kerri by having 19-21 branched anal-fin rays (vs. 22-26) (Ref. 138318).
Body shape (shape guide): short and / or deep; Cross section: compressed.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Dagosta, F.C.P., 2025. An ode to beauty: the discovery of one of the most spectacular tetras (Characiformes: Acestrorhamphidae) - a new species of Inpaichthys from the rio Juruena, Brazil. Neotropical Ichthyol. 23(3):1-19. (Ref. 138318)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Threat to humans
Harmless
Human uses
Fisheries: of potential interest
Tools
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01738 (0.00721 - 0.04190), b=3.05 (2.84 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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