hemigrammus bleheri, firehead tetra freshwater aquarium tropical fish. blehers red headed tetra fish contour lines hand drawn

hemigrammus bleheri firehead tetra freshwater aquarium tropical fish bleher's red headed contour lines hand drawn illustration graphic scales skin red-headed petitella rummy nose schooling rummy-nose species shoal specimen smart peaceful careful characidae rhodostomus underwater beautiful wildlife pet tank protection nature white background animal slivers scale small aquatic hyphessobrycon amazon swimming fishes characins reshwater aquaria contourlines