dwarf cat

…patch on its body; the dwarf, or pygmy, corydoras (C. hastatus), an active, 4-centimetre-long species with a black band on each side; the leopard corydoras (C. julii), a silvery catfish patterned in black with stripes, short lines, and numerous small spots; and the peppered corydoras (C. paleatus), a pale, yellowish…

…as the dwarf Corydoras, or micro cat (C. hastatus), may be as little as 4 or 5 centimetres (1 1/2–2 inches) long, while the wels (Silurus glanis), a large, European species, may be 4.5 metres (15 feet) in length and 300 kilograms (660 pounds) in weight. A number of the…