| Family | Scientific Name | Author | Year | Common Name |
| Microdesmidae | Microdesmus longipinnis | (Weymouth) | 1910 | Pink Wormfish |
Microdesmus longipinnis
Unique Characters: Elongate fishes with single continuous dorsal fin including 10-28 spines and 28-66 soft rays. Mouth small, with protruding lower jaw. Pelvic fins small, separate, with 1 spine and 3 soft rays.
Similar Species: Blue Dartfish Ptereleotris calliura. First dorsal fin with 6 or fewer spines. Second dorsal fin with more than 20 elements. Pelvic fins separate, with 1 spine and 4 soft rays. Black stripe near edge of dorsal fins. Caudal fin lanceolate.
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