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Umbra krameri  Walbaum, 1792

Mudminnow
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Umbra krameri
Female picture by Wanzenböck, J.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Esociformes (Pikes and mudminnows) > Umbridae (Mudminnows)
Etymology: Umbra: Latin, umbra, -ae = shadow, in the sense of phantom; due to its quick movements (Ref. 45335).   More on author: Walbaum.

Environment / Climate / Range Ecology

Freshwater; benthopelagic; pH range: 6.0 - 6.5; dH range: 5 - ?; non-migratory; depth range 0 - ? m.   Temperate; 5°C - 24°C (Ref. 26183); 49°N - 43°N, 9°E - 31°E

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Europe: Danube drainage from Vienna to delta; lower reaches of Dniestr drainage. In Appendix II of the Bern Convention (strictly protected fauna).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 17.0 cm TL male/unsexed; (Ref. 26183); common length : 5.0 cm TL male/unsexed; (Ref. 556); max. reported age: 5 years (Ref. 59043)

Short description Morphology | Morphometrics

Differs from Umbra pygmaea by the lack of dark blotch at caudal base, its body and head irregularly strewn with small dark sport, and having 33-35 scales in midlateral series (Ref. 59043).

Biology     Glossary (e.g. epibenthic)

Adults inhabit small irrigation canals and slowly flowing and stagnant waters with dense vegetation (Ref. 26183), usually in small ditches, oxbows, backwaters and shallow lakes (Ref. 59043). Territorial in shallow pools and swamps. They feed on larger crustacean plankton and invertebrate larvae (Ref. 26183). This species is under threat due to habitat destruction, irrigation works and disappearance of shallow ditches as suitable habitats, restrictions of river inundation, pressure from introduced fish species and chemical pollution (Ref. 26183).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Female guards the brood (Ref. 26183).

Main reference Upload your references | References | Coordinator | Collaborators

Povz, M., 1995. Threatened fishes of the world: Umbra krameriWalbaum, 1792 (Umbridae). Environ. Biol. Fish. 43(3):232. (Ref. 26183)

IUCN Red List Status (Ref. 115185)

  Vulnerable (VU) (A2c)

CITES (Ref. 115941)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: of no interest; aquarium: commercial
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.6329   [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic Level (Ref. 69278):  3.3   ±0.39 se; Based on food items.
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (tm=1; tmax=5; K=0.79; Fec=200).
Prior r = 0.72, 2 SD range = 0.32 - 1.61, log(r) = -0.33, SD log(r) = 0.4, Based on: 1 K, 4 tgen, 1 tmax, 2 Fec records
Vulnerability (Ref. 59153):  Low vulnerability (17 of 100) .