perccottus glenii, chinese sleeper, freshwater predator in biotope aquarium

adaptable among amur and animal aqua aquarium aquatic asia asian beast biotope bug caudal chinese clear closeup colourful decorative dorsal driftwood east endemic eurasia eye far fauna fin fish fishkeeping freshwater glenii gray grey hobby invasive juvenile line lips live local macro male mouth native natural nature odontobutidae operculum perccottus photo plant plants predator river rotan sleeper southern squama tank underwater water weed widespread wild