Swim bladder with a median anterior extension and with or without rudimentary anteriorly directed anterolateral projections; posterior extension single. Body is light sandy brown above, pale brown to whitish below, with an ill defined silvery mid-lateral band; margins of scales may be slightly darker giving a vague meshwork pattern to the body above the lateral line; fins hyaline, the first dorsal-fin membrane tipped with a fine dusting of black; no dark spot at the base of the pectoral fin.