Plotosus unicolorCastelnau, 1873 The freshwater cobbler (Tandanus bostocki) is a species of catfish (order Siluriformes) of the family Plotosidae.

[5] The species lives in slow-flowing streams, ponds and reservoirs.

It also occurs in isolated pools in riverbeds and some freshwater lakes, swimming close to rocky, gravelly, or sandy bottoms.

Underwater cavities in river banks and root mounds of sedge tussocks may be utilized for shelter.

[4] It is a nest builder with a reproductive biology similar to that of the eel-tailed catfish.