An overhead view of an aquarium reveals various fish species

An overhead view of an aquarium reveals various fish species. Two distinct catfish are present, one with mottled brown coloring and another pale grey. A small, red fish darts near the grey catfish. Other fish are dark and slender. The tank bottom is covered in dark gravel punctuated by green stones and small, pink pellets of fish food. A large, porous rock provides cover, illuminated by a bright light source reflected in the water.