Corpuscles of Stannius in a hillstream teleost, Glyptothorax pectinopterus (McClelland)

There is a pair of corpuscles of Stannius in the hillstream catfish, Glyptothorax pectinopterus. They are rounded or oval bodies visible to the naked eye, and situated ventrolaterally in the posterior mesonephros. Each CS is enclosed in a connective tissue capsule. Histologically, the CS have granulated secretory cells which stain positively with AF, PAS and CAH. They have oval or spherical nucleus with one or two nucleoli. Neural structures are present in the capsule as well as in the substance of the corpuscle.