| Scientific Name | Country | Locality | Date taken | Picture |
|---|---|---|---|---|
| Ballerus sapa | Bulgaria | Danube River | 2004-02-06 | Absap_u1.jpg |
| Ballerus sapa | Bulgaria | Danube River | 2004-02-06 | Absap_u0.jpg |
| Acipenser stellatus | Bulgaria | Danube River | 2003-03-25 | Acste_u6.jpg |
| Acipenser stellatus | Bulgaria | Danube River | 2003-04-20 | Acste_u5.jpg |
| Acipenser stellatus | Bulgaria | Danube River | 2003-04-20 | Acste_u4.jpg |
| Acipenser stellatus | Bulgaria | Danube River | 2003-04-20 | Acste_u3.jpg |
| Alosa immaculata | Bulgaria | Danube River | 2003-04-07 | Alpon_u2.jpg |
| Alosa immaculata | Bulgaria | Danube River | 2003-04-16 | Alpon_u1.jpg |
| Leuciscus aspius | Bulgaria | Danube River | 2003-06-22 | Asasp_u6.jpg |
| Barbus tauricus | Bulgaria | Batova River | 2009-07-08 | Batau_u0.jpg |
| Chondrostoma nasus | Bulgaria | Danube River | 2003-04-20 | Chnas_u3.jpg |
| Cobitis strumicae | Bulgaria | Mesta River | 2005-09-09 | Costr_u0.jpg |
| Cobitis strumicae | Bulgaria | Mesta River | 2005-09-09 | Costr_m0.jpg |
| Romanogobio albipinnatus | Bulgaria | Danube River | 2004-04-05 | Goalb_u2.jpg |
| Gymnocephalus schraetser | Bulgaria | Danube River | 2004-02-06 | Gysch_u1.jpg |
| Gymnocephalus schraetser | Bulgaria | Danube River | 2003-04-20 | Gysch_u3.jpg |
| Gymnocephalus schraetser | Bulgaria | Danube River | 2003-04-20 | Gysch_u2.jpg |
| Ponticola kessleri | Bulgaria | Danube River | 2004-06-02 | Nekes_u1.jpg |
| Vimba vimba | Bulgaria | Danube River | 2003-04-16 | Vivim_u2.jpg |
| Zingel streber | Bulgaria | Danube River | 2004-02-06 | Zistr_u2.jpg |
| Zingel streber | Bulgaria | Danube River | 2004-02-06 | Zistr_u1.jpg |