Species ID	Species name (scientific)	Fish region index*	Species name (German)	Species name (English)	Flow velocity preference habitat**	Flow velocity preference spawning habitat**	Structural needs**
Ab-ba	Abramis ballerus	6.5	Zope	Blue bream	indifferent	rheopar	no
Ab-br	Abramis brama	6.4	Brachse	Bream	indifferent	euryopar	no
Ab-sa	Abramis sapa	6.6	Zobel	Silver bream	oligorheophil	rheopar	no
Ac-gü	Acipenser güldenstädti	6.7	Waxdick	Russian sturgeon	rheophil	rheopar	low
Ac-nu	Acipenser nudiventris	6.7	Glattdick	Ship sturgeon	oligorheophil	rheopar	low
Ac-ru	Acipenser ruthenus	6.6	Sterlet	Sterlet	oligorheophil	rheopar	low
Ac-st	Acipenser stellatus	6.7	Sternhausen	Stellate sturgeon	rheophil	rheopar	low
Al-al	Alburnus alburnus	6.4	Laube	Bleak	indifferent	euryopar	no
Al-bi	Alburnoides bipunctatus	5.6	Schneider	Spirlin	rheophil	rheopar	low
An-an	Anguilla anguilla	5.6	Aal	Eel	indifferent	euryopar	high
As-as	Aspius aspius	6.5	Schied	Asp	indifferent	rheopar	no
Ba-ba	Barbus barbus	6.2	Barbe	Barbel	rheophil	rheopar	low
Ba-br	Barbatula barbatula	5.5	Schmerle	Stone loach	rheophil	rheopar	low
Ba-me	Barbus peloponnesius	6	Semling	Pelloponese barbel	rheophil	rheopar	low
Bl-bj	Abramis bjoerkna	6.7	Güster	White bream	indifferent	euryopar	low
Ca-ca	Carassius carassius	6.5	Karausche	Crucian carp	limnophil	limnopar	low
Ca-gi	Carassius auratus gibelio	6.4	Giebel	Prussian (Gibel) carp	indifferent	limnopar	low
Ch-ch	Chalcalburnus chalcoides mento	6.4	Seelaube	Danube bleak	limnophil	limnopar	no
Ch-na	Chondrostoma nasus	5.9	Nase	Nase	rheophil	rheopar	low
Co-au	Sabanejewia balcanica	6.3	Goldsteinbeißer	Golden spined loach	oligorheophil	euryopar	high
Co-go	Cottus gobio	4	Koppe	Bullhead	rheophil	rheopar	high
Co-sp	Coregonus sp.	6.7	Felchen	Coregonus	limnophil	limnopar	no
Co-ta	Cobitis taenia	6.3	Steinbeißer	Spined loach	oligorheophil	euryopar	high
Ct-id	Ctenopharyngodon idella	not native	Graskarpfen	Grass carp	indifferent	rheopar	no
Cy-ca	Cyprinus carpio	6.5	Wildkarpfen	Wild carp	indifferent	limnopar	low
Cy-zu	Cyprinus carpio	not native	Zuchtkarpfen	Common carp	indifferent	limnopar	low
Es-lu	Esox lucius	6.2	Hecht	European Pike	indifferent	limnopar	high
Eu-da	Eudontomyzon danfordi	not classified	Donauneunauge	Danube lamprey	not classified	not classified	not classified
Eu-ma	Eudontomyzon mariae	5.1	Ukrainisches Bachneunauge	Ukr. Lamprey	not classified	not classified	not classified
Ga-ac	Gasterosteus aculeatus	not native	Dreistachliger Stichling	Threespined stickleback	limnophil	limnopar	high
Go-al	Gobio albipinnatus	6.5	Weißflossengründling	White-finned gudgeon	rheophil	rheopar	low
Go-go	Gobio gobio	6	Gründling	Gudgeon	rheophil	rheopar	low
Go-ke	Gobio kessleri	6.3	Kessler-Gründling	Kessler's Gudgeon	rheophil	rheopar	low
Go-ur	Gobio uranoscopus	6	Steingreßling	Danube gudgeon	rheophil	rheopar	low
Gy-ba	Gymnocephalus baloni	6.7	Donaukaulbarsch	Balons ruffe	oligorheophil	limnopar	low
Gy-ce	Gymnocephalus cernuus	6.8	Kaulbarsch	Ruffe	indifferent	euryopar	low
Gy-sc	Gymnocephalus schraetser	6.3	Schrätzer	Schraetzer	oligorheophil	rheopar	low
Hu-hs	Huso huso	6.4	Hausen	Beluga sturgeon	rheophil	rheopar	low
Hu-hu	Hucho hucho	5.7	Huchen	Danube salmon	rheophil	rheopar	low
La-pl	Lampetra planeri	4.5	Bachneunauge	Lamprey	not classified	not classified	not classified
Le-ce	Leuciscus cephalus	6	Aitel	European chub	indifferent	euryopar	high
Le-de	Leucaspius delineatus	6.5	Moderlieschen	Moderlieschen	limnophil	limnopar	low
Le-id	Leuciscus idus	6.4	Nerfling	Ide	indifferent	euryopar	low
Le-le	Leuciscus leuciscus	6.3	Hasel	Dace	indifferent	rheopar	low
Le-so	Leuciscus souffia agassizi	5.4	Strömer	Soufie	rheophil	rheopar	low
Lo-lo	Lota lota	5.4	Aalrutte	Burbot	indifferent	euryopar	high
Mi-fo	Misgurnus fossilis	6.5	Schlammpeitzger	European weather loach	limnophil	limnopar	high
Ne-ke	Neogobius kessleri	6.7	Kessler Grundel	Bighead goby	indifferent	euryopar	high
On-my	Oncorhynchus mykiss	4, not native	Regenbogenforelle	Rainbow trout	indifferent	rheopar	low
Pe-cu	Pelecus cultratus	6.5	Sichling	Sabre carp	indifferent	limnopar	no
Pe-fl	Perca fluviatilis	6.7	Flußbarsch	European perch	indifferent	euryopar	no
Ph-ph	Phoxinus phoxinus	5	Elritze	Minnow	indifferent	euryopar	low
Pr-ma	Proterorhinus marmoratus	6.7	Marmorierte Grundel	Tubenose goby	indifferent	euryopar	high
Ps-pa	Pseudoraspora parva	not native	Blaubandbärbling	Topmouth gudgeon (Stone moroko)	indifferent	euryopar	low
Rh-se	Rhodeus amarus	6.5	Bitterling	Bitterling	limnophil	limnopar	low
Ru-fr	Rutilus frisii meidingeri	6	Perlfisch	Perlfish	rheophil	rheopar	low
Ru-pi	Rutilus pigus virgo	6	Frauennerfling	Danubian roach	rheophil	rheopar	low
Ru-ru	Rutilus rutilus	6.4	Rotauge	Roach	indifferent	euryopar	no
Sa-al	Salvelinus alpinus	lake	Seesaibling	Alpine charr	limnophil	limnopar	no
Sa-fo	Salvelinus fontinalis	3.5, not native	Bachsaibling	Brook charr	rheophil	rheopar	high
Sa-la	Salmo trutta forma lacustris	4.5	Seeforelle	Lake trout	limnophil	rheopar	low
Sa-tr	Salmo trutta	3.8	Bachforelle	Brown trout	rheophil	rheopar	high
Sc-er	Scardinius erythrophthalmus	6.7	Rotfeder	Rudd	limnophil	limnopar	low
Si-gl	Silurus glanis	6.7	Wels	Catfish	indifferent	euryopar	high
St-lu	Sander lucioperca	6.7	Zander	Pike perch	indifferent	euryopar	low
St-vo	Sander volgensis	6.8	Wolgazander	Pike perch	indifferent	euryopar	low
Th-th	Thymallus thymallus	5	Äsche	European grayling	rheophil	rheopar	low
Ti-ti	Tinca tinca	6.7	Schleie	Tench	limnophil	limnopar	high
Um-kr	Umbra krameri	6.5	Hundsfisch	European mudminnow	limnophil	limnopar	high
Vi-vi	Vimba vimba	6.4	Rußnase	Vimba bream	oligorheophil	rheopar	no
Zi-st	Zingel streber	6	Streber	Danube streber	rheophil	rheopar	low
Zi-zi	Zingel zingel	6.3	Zingel	Common zingel	oligorheophil	rheopar	low

    * Haunschmid et al. (2010)
    ** following a classification of Zauner and Eberstaller (1999)