Syngnathus louisianae Günther, 1870
Snout very long (52.6-66.7% of head length) and very slender (depth 8-15% of its length; narrow bar of bone in front of eye; no ridge above operculum, or along side of snout; ridges along top of snout and head low; opercular ridge inconspicuous, only on front 1/3 of opercle in adults; body and front part of tail slender; dorsal fin 29-42, fin origin on trunk, well before anus; anal fin 2-4; pectoral fin 12-16; no pelvic fins; tail fin 10; ridge along side of body ends under dorsal fin, not joining that along side of tail; upper ridge of body discontinuous with that of tail just behind dorsal fin; ridges along bottom of body and tail joined; trunk rings 18-21; tail rings 33-38; no skin flaps; brood pouch under tail, its plates folded inwards.
Color variable: whitish to light tan; usually a diffuse brown stripe on rear end of snout and behind eye; large fish with silvery patch on opercle; upper body brownish, top of back often lighter; usually a narrow brown stripe along side of body above lateral body ridge, with narrow brown bars extending up from that at edge of each body ring; some fish with side and lower plates edged with brown, forming a diamond or chain pattern; lower body pale to tan.
Reaches 38.1 cm.
Vegetated bottoms of inshore and estuarine habitats; freshwater to hypersaline conditions, mostly in brackish water.
Depth: 0-38 m, usually < 10 m.
Distribution: New Jersey to Campeche, Gulf of Mexico.
Shorefishes of the Greater Caribbean online information system
Classification: Biota > Animalia (Kingdom) > Chordata (Phylum) > Vertebrata (Subphylum) > Gnathostomata (Superclass) > Pisces (Superclass) > Actinopteri (Class) > Syngnathiformes (Order) > Syngnathidae (Family) > Syngnathinae (Subfamily) > Syngnathus (Genus) > Syngnathus louisianae (Species)