Teleostei (teleosts) >
Cypriniformes (Carps) >
Leuciscidae (Minnows) > Pogonichthyinae
Etymology: argentosa: Named after Dione, the mother of Venus; argentosa meaning silvery (in reference to the sides and abdomen) (Ref. 79012).
More on author: Girard.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Subtropical
North America: Devils River and San Felipe Creek in Texas, USA.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 7.6 cm SL male/unsexed; (Ref. 79012)
Dionda argentosa is genetically distinct but morphologically indistinguishable from Guadalupe roundnose minnow, D. nigrotaeniata (Ref. 86798).
Body shape (shape guide): elongated.
Adults inhabit rocky pools, sometimes runs, of headwaters, creeks, and small rivers. Found among filamentous algae (Ref. 86798). Migratory behaviour is undetermined (Ref. 126106).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Threat to humans
Harmless
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Estimates based on models
Phylogenetic diversity index (Ref. 82804) |
PD50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00525 (0.00256 - 0.01076), b=3.10 (2.92 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trophic level (Ref. 69278) |
2.9 ±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 (25 of 100). 🛈 |