perccottus glenii, chinese sleeper, and perca fluviatilis, european perch, freshwater predators

adaptable and animal aqua aquarium aquatic beast biotope caudal chinese clear closeup colourful decorative dorsal driftwood endemic eurasia european eye fauna fin fish fishkeeping fluviatilis freshwater glenii gray grey hobby invasive line lips live local macro mouth native natural nature operculum perca perccottus perch photo plant predator predators predatory rotan sleeper species squama tank underwater water weed widespread wild