gymnocorymbus ternetzi. tropische fische schwimmen im aquarium

actinopterygii amazing amazon animal animals aquarium aquatic black bottom cerna characidae characins closeup color colorful creek exotic fauna fejkl fish fresh freshwater geographic grass gray gymnocorymbus hobby home jiri keeping light love mexico national nature ornamental pets plants rare river root scales sedentary skirt stones ternetzi tetra tropical underwater unusual water wildlife wonderful