lentic waters and feeds on plants. The fish is threatened by water pollution and habitat destruction and is considered endangered. It is migratory in Livanjsko field. Cobitidae The Neretvan spined loach (Cobitis narentana Karaman, 1928) is an Adriatic watershed endemic that inhabits a narrow area of the Neretva watershed in Croatia and Bosnia and Herzegovina In Bosnia and Herzegovina it inhabits only the lower Neretva and its smaller tributaries like the Matica River. In Croatia it is a strictly protected species and inhabits only the Neretva delta and its smaller tributaries, the (Norin) and lake systems of the Neretva delta (Baćina lakes, Kuti, Desne, Modro oko). It is considered Vulnerable (VU). Neretva delta endemics The Neretva delta hosts more than 20 endemic species, of which 18 are endemic to the Adriatic watershed, along with three endemic species in Croatia. Nearly half (45%) of the total number of species that inhabit this area are included in one of the categories of threat and are mainly endemic. Hydroelectric controversy The benefits brought by hydroelectric dams have come at an environmental and social cost. The waters of the Neretva river with its two main tributaries, the Rama and the Trebišnjica, are already harnessed by 9 (nine) Hydroelectric power plants with large dams, four on Neretva main stream, one with a major dam on the Rama tributary, and another three on the Trebišnjica River. These facilities are as follows: on the Neretva: Jablanica Hydroelectric Power Station, Grabovica Hydroelectric Power Station, Salakovac Hydroelectric Power Station, Mostar Hydroelectric Power Station; on the Rama: Rama Hydroelectric Power Station; on the Trebišnjica: Trebinje-1 Hydroelectric Power Station, Trebinje-2 Hydroelectric Power Station, Čapljina Hydroelectric Power Station, Dubrovnik Hydroelectric Power Station (in Croatia). There are additional number of hydroelectric power station of various capacity on smaller tributaries, such as Mostarsko Blato Hydroelectric Power Station on the Lištica (downstream from HPP named Jasenica), Peć Mlini Hydroelectric Power Station on the Trebižat, and numerous small hydro on the small river tributaries like Tatinac, Trešanica, Neretvica and Duščica, with a proposed small hydro on the rivers Doljanka, Glogošnica, and one abandoned on the Idbar. Projects in Upper Neretva The government of the Bosnia and Herzegovina has unveiled plans to build three more hydroelectric power plants with dams over 150.5 metres in height upstream from the existing plants, beginning with Glavaticevo Hydro Power Plant in the village of Glavatičevo, then going upstream to Bjelimići Hydro