Pterois volitans (Linnaeus, 1758) is one of the most appreciated fish in the common reef aquariology but, unfortunately, a potentially dangerous subject due to its venom glands, which cancause injuries and envenomations. This study relays on the recording of injuries in Italian hobbyists/caretakers/retailers, enabling us to evaluate the most dangerous steps during the management of the fish. By recording P. volitans behavior both in aquarium and in the wild, the authors postulate that prevention of injuries in aquariology must start from the knowledge of territorial and feeding behavior of this species, and stress the revision of Italian law in order to make sellers much more responsible about P. volitans management and welfare, as necessary protective measures for sellers, public and buyers.

Scorpaenidae --- envenomation --- aquarium fish behaviour

Concepts of Integrated Water Resources and River Basins Management are considered as key points to the question of how conflict can be avoided and international waters be managed. Over the last fifty years, countries have been engaged in more than 500 conflictive events over water. Almost 90% were disagreements over infrastructure and water quantity allocation. The Convention on the NonnavigationalUses of International Watercourses (1997) provides an important template for cooperation and equitable transboundary water-sharing.

water --- management --- resources --- conflict

Systematic categories of invertebrates bioindicators correlated with some chemical parameters,were an effective way to characterize the quality of lotic (Someş River) and lentic (Lake Gilău) aquatic environment from Cluj-Napoca area. Invertebrate fauna was represented by species belonging to the following dominant systematic categories: Nematoda, Annelida, Crustacea and Insecta. This paper containsalso some preliminary data on the bioindicators species belonging to Protozoa phylum. Dominant groups were crustaceans (the sampling points in Lake Gilău) and annelids (Somes River) and among species Gammarus pulex, Daphnia pulex, Tubifex tubifex. The fauna composition shows the β-α mesosaprobic character of the water, with an evolution from β mesosaprobity upstream the Cluj-Napoca city to polysaprobic downstream of the city. This aspect has been observed and analyzed according to chemical parameters (pH, TDS, ORP, EC, t) and indices of saprobity (relative cleanliness, state of relative pollution, the deficit of species, saprobiological index).Systematic categories of invertebrates bioindicators correlated with some chemical parameters, were an effective way to characterize the quality of lotic (Someş River) and lentic (Lake Gilău) aquatic environment from Cluj-Napoca area. Invertebrate fauna was represented by species belonging to the following dominant systematic categories: Nematoda, Annelida, Crustacea and Insecta. This paper contains also some preliminary data on the bioindicators species belonging to Protozoa phylum. Dominant groups were crustaceans (the sampling points in Lake Gilău) and annelids (Somes River) and among species Gammarus pulex, Daphnia pulex, Tubifex tubifex. The fauna composition shows the β-α mesosaprobic character of the water, with an evolution from β mesosaprobity upstream the Cluj-Napoca city to polysaprobic downstream of the city. This aspect has been observed and analyzed according to chemical parameters (pH, TDS, ORP, EC, t) and indices of saprobity (relative cleanliness, state of relative pollution, the deficit of species, saprobiological index).

environmental quality --- aquatic biotic environment --- bioindicators --- Protozoa --- invertebrates --- monitoring --- saprobity

The aim of this paper is to establish the potential bioaccumulation of five heavy metals (Cu,Cd, Ni, Co, Zn) in two species of fish from Crişul Negru River (Romania), moderately polluted from amining area, comparative with the fish sampled from Crişul Repede River, considered as a control site.The sampling periods extended along three campaigns/ each month, from a total of ten months, on foursites situated along the Crişul Negru River and on a control site situated on the neighbouring stream, theCrişul Repede River, same catchment. The values obtained for the five heavy metals were in accordancewith values registered in the water column and the upper threshold limit concentrations for fish meatimposed by European and other international normative, but with one exception. The increased valuesfor cobalt accumulated in the fish from the immediate locations of a mining site do make them improperfor human consumption.

heavy metals --- Phoxinus phoxinus --- Leuciscus cephalus --- Crişul Negru River