Croatia
Checklist of Endemic Freshwater Fish Species
This list of freshwater fish species found exclusively in Croatia is based on the taxonomy used in Eschmeyer's Catalog of Fishes (2023). For further details on possible inaccuracies in the list see Sources & Caveats.
Fricke, R., Eschmeyer, W. N. & Van der Laan, R. (eds) 2023 Catalog of Fishes: Genera, Species, References. Version downloaded 9 February 2023 https://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp
The current version can be accessed here
A 2020 paper considers 15 species of freshwater fishes to be true endemics to Croatia (see p. 6 of ResearchGate pdf).
Cobitis dalmatina
(Cypriniformes Cobitidae) Dalmatian Spined Loach
Cobitis jadovaensis
(Cypriniformes Cobitidae) Jadova Spined Loach
Delminichthys jadovensis
(Cypriniformes Leuciscidae) Jadova Minnow
Delminichthys krbavensis
(Cypriniformes Leuciscidae) Krbava Minnow
Phoxinellus dalmaticus
(Cypriniformes Leuciscidae) Dalmatian Minnow
Phoxinus krkae
(Cypriniformes Leuciscidae) Krka Minnow
Squalius illyricus
(Cypriniformes Leuciscidae) Illyrian Chub
Squalius zrmanjae
(Cypriniformes Leuciscidae) Zrmanja Chub
Telestes croaticus
(Cypriniformes Leuciscidae) Croatian Pijor
Telestes fontinalis
(Cypriniformes Leuciscidae) Krbava Dace
Telestes karsticus
(Cypriniformes Leuciscidae) Karst Dace
Telestes miloradi
(Cypriniformes Leuciscidae) Konavle Dace
Telestes polylepis
(Cypriniformes Leuciscidae) Croatian Dace
Telestes turskyi
(Cypriniformes Leuciscidae) Tursky Dace
Telestes ukliva
(Cypriniformes Leuciscidae) Ukliva Dace
Salmo visovacensis
(Salmoniformes Salmonidae) Visovac's Trout
Salmo zrmanjaensis
(Salmoniformes Salmonidae) Zrmanja Trout