Basslets and Assessors are small, long bodied fish strongly resembling Anthias. Their care requirements, however, are closer to those of damsels. They should be kept individually, and generally not with other fish of similar shape and colour. Feeding is easy: they will generally eat any meaty foods offered. Good water quality should be maintained at all times.
| Common Name | Taxonomy | Description | Max Size |
| Black cap gramma  | Purple with a black mask beginning at the mouth and ending at the base of the dorsal fin. | 6 cm | |
| Blue assessor | Entirely navy blue with white edging of the dorsal fin. | 7 cm | |
| Royal gramma  | Purple head and anterior, abruptly changing to yellow about halfway down the body. Has black marking through eye and another on the dorsal fin. Do not confuse with the Brazilian Gramma or the Bicolor Dottyback. | 5 cm | |
| Brazilian gramma | Very similar to the royal gramma, however the change from purple to yellow occurs farther down the body and the black markings are absent | 6 cm | |
| Yellow assessor | Bright lemon yellow with peach fringing of the dorsal fin and around the eye. | 7 cm |
