Atheriniformes

Atheriniformes: Usually two dorsal fins, the first, if present, with flexible spines; anal fin usually preceded by a spine; lateral line absent or very weak; branchiostegal rays 4-7; narial openings paired; pelvic fins abdominal, subadominal, or thoracic in position (essentially absent in female phallostethids and highly modified in male phallostethids); parietals usually present.
 * See Fishbase.

Families in this order:
 * Atherinidae
 * Atherinopsidae
 * Bedotiidae
 * Dentatherinidae
 * Melanotaeniidae
 * Notocheiridae
 * Phallostethidae
 * Pseudomugilidae
 * Telmatherinidae