Clupeonnella cultriventris Nordmann, 1840

Clupeonnella cultriventris image

Synonyms: Clupea cultriventris Nordmann, 1840; Clupea delicatula Nordmann, 1840; Clupeonella delicatula Svetovidov, 1952

Common names: Engl: Tyulka sprat; Bulg: Ezerna tritsona; Rom: Gingirica; Russ: Tyul'ka; Turk: Tilka



Taxonomic descriptions: D 14-16; A 17-21; P 13-16; V 8; C I 17 I; Keeled scales 26-30; Gillrakers 41-62; Vertebrae 41-43 (16-18 + 17-19) (Sivkov, 1994). Body elongated, laterally strongly depressed. Body width 0.08-0.11 SL. Belly with a sharp edge of keeled scales. Last two anal finrays enlarged. Size: to 10.5 cm.

Clupeonnella cultriventris arealIUCN Status:
    World level: NE
    Black Sea Regional level: EN
    Subregion level: EN

Distribution: Brackish waters of the north-western part of the Black Sea and Sea of Azov and Caspian (Whitehead, 1984). In Bulgaria: Lakes Shabla, Varna, Burgas; the Bay of Varna (Stojanov and all., 1963).

Habitats type, Critical habitats, Limiting factors: Shoal, pelagic, euryhaline, essentially in brackish waters; shoal and brackish waters; chemical pollution of the coastal lakes.

Biology: Reproduction: April-June on the Bulgarian coast. Food: zooplankton, copepods, mollusc larvae and small fishes.

Population trends: Declining.

Threats: Chemical pollution of the coastal lakes.

Conservation measures taken: Lake Shabla has been made a reserve. The species is included in the Bulgarian Red book (Karapetkova, 1985).

Conservation measures proposed: Cessation of the pollution.


  1. Karapetkova, M. 1985. Red book of Bulgaria., 2, Animals, Sofia, 182 pp.
  2. Sivkov, Y. 1994. Morphological characteristics of the Clupeonella cultriventris (Pisces, Clupeidae) from the Bulgarian Black Sea coast. - Bul. Mus. Nat. Varna, 30/45.
  3. Stojanov, S. and all., 1963. The fishes in the Black Sea. Publishing house Varna, 246 pp.; Whitened, 1984. Fishes of the North-eastern Atlantic and the Mediterranean., v. 1: 274.

Compiled by: Y.Sivkov, K.Prodanov