Commercial freshwater fishing shall not be conducted by a domestic legal person wholly or partly owned by a foreign natural or legal person, unless otherwise provided in an international agreement.
"Article 79
(1) Foreign natural and legal persons may engage in commercial fishing in the fresh waters of the Republic of Croatia only in cases determined by an international agreement. [...]
(4) Commercial fishing in the fishing waters of the Republic of Croatia may not be performed by:
1. domestic legal entity to which the founder is a foreign natural or legal person,
2. a domestic legal entity that is wholly or partly owned by a foreign natural or legal person.[...]" (Freshwater Fisheries Act (NN 49/2005), consolidated text of 4/15/2005, Article 79 [google translation])
Freshwater Fisheries Act (NN 49/2005), consolidated text of 4/15/2005, Article 79
[<a href="https://narodne-novine.nn.hr/clanci/sluzbeni/2005_04_49_949.html">Act</a>]