The Threadfishes
THIS is a small family of tropical fishes bearing superficial resemblances to the Mugilidae on the one hand and the Scioenidae on the other. They may be distinguished by the abdominal ventrals, the presence of 2 dorsal fins, the anterior of spines only, and by having the lower 5 to 8 rays of the ventral fin detached and filamentous. The family contains 4 genera and about 25 species, only 2 of the former and about 5 of the latter being found in our waters.