Appendix 3. Rare or Limited Distribution of Bulgaria's Freswather Ichthyofauna
Species Rare Very Rare Extremely Rare 1 2 3 4 Eduontonmyzon danfordi (Regan, 1911) + Huso huso (Linnaeus, 1758) + Acipenser nudiventris Lovestzky, 1828 + Acipenser sturio Linnaeus, 1758 + Acipenser stellatus Pallas, 1771 + Acipenser gueldenstaedti Brant, 1833 + Clupeonella cultriventris Nordm. + Alosa caspia nordmani (Antipa, 1906) + Alosa caspia bulgarica Brensky, 1934 + Alosa maeotica maeotica Grimm, 1901 + Salmo trutta labrax Pallas, 1811 + Salvelinus fontinalis (Mitchill, 1815) + Hucho hucho (Linnaeus, 1758) + Coregonus lavaretus (Linnaeus, 1758) + Coregonus peled (Gmelin, 1788) + Coregonus albula (Linnaeus, 1758) + Thymallus thymallus (Linnaeus, 1758) + Rutilus frisii (Nordm., 1840) + Leuciscus souffia Risso, 1826 + Leuciscus borysthenicus (Kessler, 1859) + Leuciscus delineatus (Heckel, 1843) + Chalcalburnus chalcoides (Gueldenstaedti, 1772) + Gobio uranoscopus (Agassiz, 1836) + Cyprinus carpio Linnaeus, 1758 (wild form) + Ictiobus cyprinellus Valenciennes, 1844 + Ictiobus bubalis Rafinesque, 1810 + Ictiobus niger Rafinesque, 1810 + Noemacheilus angorae bureschi Drensky, 1928 + Cobitis peshevi Sivkov and Dobrovolov, 1986 + Sabanejwia bulgarica (Drensky, 1928) + Ictalurus punctatus (Rafinesque, 1810) + Anguilla anguilla (Linnaeus, 1758) + Lota lota (Linnaeus, 1758) + Pungitius platygaster (Kessler, 1858) + Gasterosteus aculeatus Linnaeus, 1758 + Syngnathus nigrolineatus Eichw., 1831 + Nerophis ophidion (Linnaeus, 1758) + Atherina mochon pontica Eichw., 1831 + Stizostedion volgense (Gmelin, 1788) + Stizosteion marina Cuv., 1828 + Zingel streber (Siebold, 1863) + Zingel zingel (Linnaeus, 1758) + Gymnocephalus schraetzer (Linnaeus, 1758) + Gymnocephalus baloni Holcik and Hensel, 1974 + Neogobius kessleri Guenther, 1861 + Aphia minuta (Risso, 1810) + Knipowitschia caucasica (Kawr.) Berg, 1916 + Neogobius rata Nord., 1840 + Neogobius syrman Nord., 1840 + Benthophiloides brauneri Beling and Iljin, 1927 + Benthophiloides stellatus (Sauvage, 1874) + Cottus gobio gobio Linnaeus, 1758 + Cottus gobio haemusi Marinov and Dikov, 1986 + Appendix 4. Endemic Species and Subspecies of Bulgaria's Freshwater Ichthyofauna.
I. Endemics for Bulgaria and the Balkan Peninsula
1. Sabanejwia bulgarica Drensky, 1928 - Bulgarian sector of the Danube River.
2. Sabanejwia aurata balcanica Karaman, 1922 - Danube and Aegean Basin tributaries.
3. Cottus gobio haemusi Marinov and Dikov, 1986 - Danube tributaries.
4. Alosa caspia bulgarica Drensky, 1934 - South Black Sea tributaries.
5. Cobitis peshevi Sivkov and Dobrovolov, 1986 - Aegean Sea Basin (Strouma, Maritsa, Topolnitsa, Vardar, and etc. rivers).
6. Vimba melanops Heckel, 1840 - Aegean Sea Basin (Strouma, Maritsa, Topolnitsa, Vardar, and etc., rivers).
7. Barbus cyclolepis cyclolepis Heckel, 1840 - Aegean Sea Basin (Strouma, Maritsa, Topolnitsa, Vardar, and etc., rivers).8.Chondrostoma nasus vardarenses Karaman, 1928 - Aegean Sea Basin (Strouma, Maritsa, Topolnitsa, Vardar, and etc., rivers).
9. Rutilus rutilus mariza Drensky, 1928 - Danube River and the Black Sea and Aegean Sea Basins.
10. Noemacheilus angorae bureschi Drensky, 1928 - Aegean Sea Basin (Strouma, Maritsa, Topolnitsa, Vardar, and etc., rivers).II. Endemics for the Danube River Basin, represented in the Bulgarian Sector of the Danube River and its Tributaries in Bulgaria
1. Hucho hucho (Linnaeus, 1758) - only in the Danube River.
2. Gymnocephalus schraetzer, Linnaeus, 1758.
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