No abstract

Topmouth gudgeon, Pseudorasbora parva was firstly recorded in Europe in southern Romania and Albania. This species was firstly determined from the Thrace region of Turkey in 1984 in the River Meriç. In this research, samples collected from four different stations between March 2010 and June 2011. A total of 81 P. parva individuals were caught by using drift-nets with a mesh-size of 10 mm, and 24 P.parva individuals were caught by using seine nets with a mesh-size of 0.9 mm. The fork length of individuals which were caught (FL) were between 6.1 and 11.1 cm, and their weights (W) were ranged between 3.52 and 25.49 g. Dorsal fin-ray: III/8, anal fin-ray: III/ (6-7), pelvic fin-ray: I/7-8, pectoral fin-ray: I/12-15, Linea lateral: 35-37, Linea transversal: 4-6/4. It has spread into many natural lakes, ponds, and reservoirs in recent years.

and Uşak provinces between 2001 and 2013. Specimens collected from various localities in these provinces. Our results are shown P. parva has invaded many freshwater systems in Türkiye. This species has a potential threat to the diversity of the ichthyofauna of Anatolia and fish farms because of causing an increased mortality pressure on some salmonids and cyprinids, and totally inhibiting spawning of existing native fish.

In this study, some growth characteristics and relationships of Sakarya bleak inhabiting different water habitats (dam, pond and creek)

No abstract