abuelo" has a dusky-gray body colouration that varies from relatively plain to having numerous small brown spots, and usually has a broad, diffuse band crossing the nape at the dorsal fin origin.Both "C. goeldii" and "C. eques" have a relatively uniform body colouration without spots; "C. goeldii" has a small, triangular spot at the dorsal fin origin, while "C. eques" has a distinct dark band at the dorsal fin origin.