Golden Silverside (Labidesthes vanhyningi)

Description: 

The Golden Silverside has a widespread distribution across Gulf of Mexico and southern Atlantic Slope drainages from Texas to North Carolina. They are found near the surface in a wide variety of habitats in slow-moving water. As the common name suggests, Golden Silversides have golden or yellow fins and silvery sides. They have a translucent body, a red snout shaped like a beak, and two dorsal fins spaced far apart on their back.

Literature: 
Werneke, D.C., and J.W. Armbruster. "Silversides of the genus Labidesthes (Atheriniformes: Atherinopsidae)." Zootaxa 4032.5 (2015): 535-550.