Female Dark Sleeper (Odontobutis obscura) with Eggs | Japan
This is a female dark sleeper (Odontobutis obscura), a species of freshwater sleeper perch, protecting her brood of eggs. Here she is flipped upside-down above her eggs. The developing embryos are close to hatching, as the eyes are clearly visible. This fish’s den was located in a tiny crevice in a small ditch by the side of a road.