Palespotted corydoras

The Palespotted Cory (Corydoras gossei) is a charming armored catfish from the rio Mamoré watershed in Rondônia state, northwestern Brazil, part of the upper Madeira River system within the greater Amazon basin. Named in honor of Dr. J. P. Gosse, who collected the type material, this species reaches a maximum standard length of 50–55 mm and exhibits the characteristic Corydoras body armor of overlapping bony plates along the flanks. Its pale, mottled coloration with delicate spotting provides excellent camouflage against the sandy substrates of its native habitat, and it can be distinguished from the similar-looking C. seussi by its shorter, rounder snout.

Like all members of the genus, the Palespotted Cory is a peaceful, gregarious fish that should be maintained in groups of at least four to six individuals. They spend much of their time actively foraging along the bottom, sifting through sand with their sensitive barbels in search of food particles, and their social nature means they are noticeably more confident and active in the company of their own kind. They make ideal inhabitants of a well-maintained community aquarium alongside other peaceful species such as tetras, rasboras, and dwarf cichlids. As foraging omnivores, they eagerly accept sinking dried foods but thrive when offered a varied diet that includes small live and frozen options like bloodworm and Tubifex — they should never be expected to subsist on leftovers from other tank inhabitants.

Native to the soft, acidic waters of the Amazon basin, the Palespotted Cory does best in an aquarium with a fine sand substrate to protect its delicate barbels, along with some cover in the form of driftwood, plants, or caves to provide security. Optimal water parameters include a temperature of 24–28°C, pH 5.5–7.5, and relatively soft to moderately hard water. Breeding follows the typical Corydoras pattern: a large, cool water change often triggers spawning, with eggs deposited on the aquarium glass, among fine-leaved plants, or on spawning mops. Incubation takes 3–4 days, and the fry require excellent water quality and a thin layer of sand for best results. Like all Corydoras, this species is a facultative air breather, periodically rising to the surface to gulp atmospheric oxygen, and its sharp pectoral-fin spines can deliver a painful sting if handled carelessly.