Length-Weight Relationships and Condition Factors of Eight Exotic Fish Species from Turkey

Length-weight relationships (L-WRs) and condition factors were estimated for eight exotic fish species, including Oreochromis niloticus, Coptodon zillii, Carassius auratus, C. gibelio, Pseudorasbora parva, Gambusia holbrooki, Lepomis gibbosus, Oncorhynchus mykiss from 10 basins of Turkish inland waters. A total 1958 specimens sampled in the years 2014, 2017, 2018, 2019 29 populations their LWRs parameters, form, Fulton’s, relative mean estimated. The values parameter b ranged 2.732 (C. auratus) to 3.319 gibelio) with median at 3.013 3.047, respectively. R2 varied 0.753 0.998, indicating a high degree positive relationship between length weight. Fulton’s factor was as 0.882 P. parva 2.002 L. gibbosus. 1.397 1.453, This situation reveals that all alien species except are quite high. In addition, local they live Çıldır Lake compared. As result this comparison, it determined gibelio had highest value.