A member of the barracuda family, the guaguanche is a long, slender, silvery ﬁsh often mistaken for a young great barracuda. There is no concerted sportﬁshing effort for the species, but it is occasionally caught by anglers.
Silvery olive-brown above, the guaguanche has silvery sides with a yellow to golden stripe running along the middle of its body. Like other members of the barracuda family, it has an elongated body and large canine and shearing teeth. Its caudal ﬁn is large, forked, and blackish, and it has widely separated dorsal ﬁns. The pelvic ﬁn begins below a point just in front of the ﬁrst dorsal ﬁn, which distinguishes it from the similar-looking sennet. On the young guaguanche, there are three broad bars at the rear of the body that are often interrupted in the middle of each side.
The guaguanche can grow to 2 feet, although it more commonly measures 6 to 14 inches.
Found occasionally in Florida, the Bahamas, and the Caribbean, guaguanche occur from Massachusetts to the northern Gulf of Mexico and south to Brazil.
Guaguanche inhabit shallow and generally turbid coastal waters, including sand ﬂats, grassbeds, mud bottoms, bays, and estuaries, although they are rare around reefs. The guaguanche is a schooling species, forming schools at depths from 3 to 40 feet, and can be found near the surface at night.