| Species name | Common name | Distribution | Max. Length (cm) | 
|---|---|---|---|
| Costasiella coronata Swennen, 2007 | Western Pacific | ||
| Costasiella kuroshimae Ichikawa, 1993 | Indo-Pacific | ||
| Costasiella nonatoi Marcus & Marcus, 1960 | Western Atlantic | 0.5 | |
| Costasiella ocellifera (Simroth, 1895) | Eyespot Costasiella | Western Atlantic | 1 | 
| Costasiella pallida Jensen, 1985 | Western Pacific | ||
| Costasiella vegae Ichikawa, 1993 | Western Central Pacific | ||
| Costasiella virescens Pruvot-Fol, 1951 | Mediterranean Sea |